CBSE > Class 12 > Physics | CBSE Board | Homework Help

Yes they surely can if the magnitude of charge on one object is greater/lesser on the second object.Consider two spheres -:Sphere A and Sphere B.Let’s say Sphere A has 10C charge will Sphere B has 4C charge then Sphere A can induce negative charges on B due to induction and can attract it.For greater clarification read this.

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Ujjawal Sharma 7 years, 11 months ago

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Isaac Kartik 7 years, 11 months ago

Yes.if one charge is point charge and another is infinitly large

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Bhumi Jain 7 years, 11 months ago

Because if they differ in size/volume it means one is having more positive charge than other tht os why they get attracted

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Ujjawal Sharma 7 years, 11 months ago

How they attract

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Ankush Saini 7 years, 11 months ago

Yes . If one charge is large and another is smaller

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Abc Efg 7 years, 11 months ago

Yess.. If there Volume are different...

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Ujjawal Sharma 7 years, 11 months ago

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ANSWER

Which is having more critical angle water or diamond???

Posted by Abc Efg 7 years, 11 months ago

CBSE > Class 12 > Physics

7 answers

Abc Efg 7 years, 11 months ago

Okay thanks

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Ujjawal Sharma 7 years, 11 months ago

Total internal reflection

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Abc Efg 7 years, 11 months ago

What is TIR ??

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Ujjawal Sharma 7 years, 11 months ago

I mean at less incidence angle than in water

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Ujjawal Sharma 7 years, 11 months ago

Because TIR occur fast in diamond

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Abc Efg 7 years, 11 months ago

Yess.. I think u r correct.. Diamond has less critical angle.. Thanks ?

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Ujjawal Sharma 7 years, 11 months ago

Diamond has less critical angle

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ANSWER

What will be the fringe width if the double split apparatus is dipped in turpentine????

Posted by Manu Sharma 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Ujjawal Sharma 7 years, 11 months ago

Fringe width decrease

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ANSWER

What is colour code for carbon resistances? What is understood by golden and silver bands over carbon resistances?

Posted by Aman Raj 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How is diode able to act as rectifier

Posted by Ujjawal Sharma 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Urvi Sahu 7 years, 11 months ago

The main application of p-n junction diode is in rectification circuits. These circuits are used to describe the conversion of a.c signals to d.c in power supplies. Diode rectifier gives an alternating voltage which pulsates in accordance with time. The filter smoothes the pulsation in the voltage and to produce d.c voltage, a regulator is used which removes the ripples. There are two primary methods of diode rectification: Half Wave Rectifier Full Wave Rectifier

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Abc Efg 7 years, 11 months ago

In an electronic circuit a diode acts in the same as a rubber valve in a bicycle tire. The valve allows the pumped air to enter from one side and blocks from the other . Similarly a rectifier diode allows the flow of current only through one direction.

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ANSWER

What is d principle and working of van de graaft generator?

Posted by Nidhi Pandey 7 years, 11 months ago

CBSE > Class 12 > Physics

5 answers

Nidhi Pandey 7 years, 11 months ago

Then y it is in our ncert book

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Tanisha Brar 7 years, 11 months ago

This topic has been deleted from our course

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Abc Efg 7 years, 11 months ago

No.. it's from our course only.. I have read.this topic.. But not remember...

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Ujjawal Sharma 7 years, 11 months ago

It is not in our course

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Rahul Soni 7 years, 11 months ago

I don't know

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ANSWER

A metallic rod of length l and resistance R with frequency nu,with one end at centre and other end at circumference of metallic ring of radius l about an acis passing through centre and perpendicular to plane of ring. A const and uniform magnetic field B parallel to axis is present everywhere. A)derive exp induced emf and current in rod.

Posted by Sriram V 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

investigatory project best topics.

Posted by Prem Nath 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Anushka Tripathi 7 years, 11 months ago

Maine bhi isi topics pr banaye hai

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Anushka Tripathi 7 years, 11 months ago

Phy=nuclei Chem= VBT nd CFT Bio=all topics are good.

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ANSWER

Write the relation for polarisation p of dielectric material in the presence of an external electric field

Posted by Tavleen Kaur 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Ujjawal Sharma 7 years, 11 months ago

P=CHI .E

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ANSWER

Expression for drift velocity of free ekectron.

Posted by Naman Uppal 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Bhumi Jain 7 years, 11 months ago

Vd=-[eE/m]T (where T=Tou)

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ANSWER

Newmerical

Posted by Balveer Batti 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define quality factor

Posted by Pranjali Mahajan 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Ujjawal Sharma 7 years, 11 months ago

It is the ratio of potential difference of capacitance or inductor and potential difference of resistor.

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ANSWER

What is electrosatic potential

Posted by Vishal Syal 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Bhumi Jain 7 years, 11 months ago

It may be defined as the amount of work done in moving a unit positive charge from infinity to that point against the electrostatic forces

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ANSWER

Electric field at equitorial point

Posted by Navneet Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What happen when a dielectric slap insert betwwen the plate of capacitor

Posted by Nitesh Ranjan 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Bhumi Jain 7 years, 11 months ago

when we put dielectric slab between two plates of capacitor it get ionized, ionization lead more charge storage inside dielectric, thus more storage in capacitor hence we can say capacitance is increased

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ANSWER

Does a charge particle gain K.E when passed through magnetic field regio

Posted by Bhumi Jain 7 years, 11 months ago

CBSE > Class 12 > Physics

3 answers

Tamanna Bansal 7 years, 11 months ago

No it do not....only momentum of particle changes due to change in direction in magnetic field

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Bhumi Jain 7 years, 11 months ago

Give reason...

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Ujjawal Sharma 7 years, 11 months ago

I think yes

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ANSWER

Principal of cyclotron??

Posted by Abc Efg 7 years, 11 months ago

CBSE > Class 12 > Physics

10 answers

Urvi Sahu 7 years, 11 months ago

I mean to say that she can also read the same content in sl arora.....there is no use to ask that question here

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Bhumi Jain 7 years, 11 months ago

As such there is no such rule in board that you have to write ans from specified book it only sees that ans is correct or not...

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Bhumi Jain 7 years, 11 months ago

I refer that book only so it means i have given ans from that. So what's about copying .you are learning by own or prefering some book

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Urvi Sahu 7 years, 11 months ago

Bhumi's whole content has been copied from sl arora

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Urvi Sahu 7 years, 11 months ago

Komii you asked for principle.... and principle is that only....

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Bhumi Jain 7 years, 11 months ago

A charged particle can be accelerated to very high energies by making it pass through a moderate electric field a number of times. This can be done with the help of a perpendicular magnetic field which throws the charged particle into a circular motion, the frequency of which does not depend on the speed of the particle and the radius of the circular orbit.

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Abc Efg 7 years, 11 months ago

Can Anyone try another answer.. I think it's not perfect..

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Urvi Sahu 7 years, 11 months ago

Cyclotron works on the principle that a charged particle moving normal to a magnetic field experiences magnetic lorentz force due to which the particle moves in a circular path.

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Abc Efg 7 years, 11 months ago

Sorry my mistake principle.. Now u give answer

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Urvi Sahu 7 years, 11 months ago

Principal or principle

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ANSWER

What role does an individual organism play as per Darwin's theory of natural selection??

Posted by Abc Efg 7 years, 11 months ago

CBSE > Class 12 > Physics

9 answers

Bhumi Jain 7 years, 11 months ago

According to Darwins theory of natural selection the role of individual organisms is to pass on the necessary variations,changes or mutation that has been selected by the native,from present generation to the next.

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Abc Efg 7 years, 11 months ago

Thanks bhumi

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Abc Efg 7 years, 11 months ago

Okay ujjwal

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Ujjawal Sharma 7 years, 11 months ago

I have math,so sorry

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Bhumi Jain 7 years, 11 months ago

According to Darwin, fitness refers ultimaterly and only to reproductive fitness. Those who are better fit in an environment, leave more progeny than others.

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Abc Efg 7 years, 11 months ago

Can anyone knowing the answer??

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Abc Efg 7 years, 11 months ago

No actually a have selected subject as physics. That's y

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Divya Sen 7 years, 11 months ago

Why r u saying sorry komii if it is from bio then what is the problem i m not getting??

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Abc Efg 7 years, 11 months ago

Sorry it's form bio

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ANSWER

I want some friends anyone ??

Posted by Gurjot Grewal 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Bhumi Jain 7 years, 11 months ago

For what

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Abc Efg 7 years, 11 months ago

For what purpose???

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ANSWER

What are the Properties of Displacement Current in Electromagnetic Waves

Posted by Anshika Singh Shrinet 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Ujjawal Sharma 7 years, 11 months ago

Displacement current is the current which produce in capacitor due to changing of electric field

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ANSWER

How does the dispersive power of glass prism change when dipped in water

Posted by Bhumi Jain 7 years, 11 months ago

CBSE > Class 12 > Physics

6 answers

Urvi Sahu 7 years, 11 months ago

Refractive index of glass wrt water is less than wrt to air. Hence angle of deviation is less. Hence dispersive power is less.

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Abc Efg 7 years, 11 months ago

Angle of minimum deviation = Dm = (μ - 1) A, where A is the angle of prism. μ = refractive index of glass of prism wrt to air or water as the case may be. Refractive index of glass wrt water is less than wrt to air. Hence angle of deviation is less. Hence dispersive power is less.

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Bhumi Jain 7 years, 11 months ago

Plzz help na..

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Ujjawal Sharma 7 years, 11 months ago

OK question achha h

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Bhumi Jain 7 years, 11 months ago

I also Don't know

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Ujjawal Sharma 7 years, 11 months ago

Can you know the answer bhumi. I don't know

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ANSWER

What is the source of magnetic field or magnetism???

Posted by Abc Efg 7 years, 11 months ago

CBSE > Class 12 > Physics

5 answers

Ujjawal Sharma 7 years, 11 months ago

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Abc Efg 7 years, 11 months ago

So.. But u have not given the perfect answer....

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Ujjawal Sharma 7 years, 11 months ago

Moving of electron is called current

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Abc Efg 7 years, 11 months ago

Yess.. might be.. I think electrons revolving in atom behave as current loop.these current loops give rise to magnetism

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Ujjawal Sharma 7 years, 11 months ago

I think magnet and current r the source

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ANSWER

Explain bio savart law? And also derived it's equation

Posted by Abc Efg 7 years, 11 months ago

CBSE > Class 12 > Physics

5 answers

Abc Efg 7 years, 11 months ago

Plz anyone tell me the answer if you know.. Don't argue with each other

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Ujjawal Sharma 7 years, 11 months ago

Sorry here I not drive it

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Urvi Sahu 7 years, 11 months ago

Are you taking test of him komii? ...you should read sl arora if you want to know the ans

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Abc Efg 7 years, 11 months ago

Oh.. that means you don't know the answer.. Mr. Ujjwal

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Ujjawal Sharma 7 years, 11 months ago

Please read SL ARORA

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ANSWER

A network of resistor is connected to a battery 16volt and internal distance one ohm shown in figure

Posted by Akshit Saini 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Electric dipole moment of CuSO4 molecule is 3.2×10^-32 . Find separation between copper and sulphate ions

Posted by Naseer Abbas 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is lc oscillation

Posted by Aamir Raja 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Garima Jain 7 years, 11 months ago

When a charged capacitor is connected to an inductor then it behaves like a battery and flows current according to stored energy in itself due to that oscillation of energy starts between capacitor and inductor. This phenomenon is known as LC oscillation

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ANSWER

What is young double slits experiment

Posted by Ikram Saifi 7 years, 11 months ago

CBSE > Class 12 > Physics