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What is relativity of theory. Do gravitation really affects the time of a place

Posted by Hy Shona 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Farraday law

Posted by Ankit Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Mahima Verma 7 years, 3 months ago

Faraday's first law: It states that when the magnetic field around a coil changes, an induced emf (and hence induced current) is set up in the coil which stays as long as the change in magnetic flux takes place. This is also known as electromagnetic induction. IInd law: It states that the emf induced in the coil is equals to the rate of change of the magnetic flux.

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Formula in meter bridge is 100-l÷l or l÷100-l

Posted by Shruti Gupta 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Pooja Sarkar 7 years, 3 months ago

100-l/l

3Thank You

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What ia bandwidth

Posted by Sajal Thakur 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Deepak Jindal 7 years, 3 months ago

It is defined as range within a band of frequencies or wavelengths.

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ANSWER

If we pass current in non insulated wire what will happen to its magnetic field

Posted by Gururaj Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Naman Rathi 7 years, 3 months ago

The magnetic field be same as in conducting wire coz conducting and non insulating are same...

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ANSWER

Why lens do not have centre of curvature?

Posted by Shairin Bedi 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Rohan Sharma 7 years, 3 months ago

Because lens is the combination of two spherical mirror then they do not have centre of curvature .They have optical centre also.

3Thank You

Kuldeep ?? 7 years, 3 months ago

Because there is much difference in mirror and lens.In both lenses the thikning make difference

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ANSWER

How does electric field strength changes with distAnce r from short dipole...

Posted by Mohit Sepat 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Hy Shona 7 years, 3 months ago

At equitorial.point it is r^2 and in case of axis it is r^3

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Hy Shona 7 years, 3 months ago

E is inversely proportional to r

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Transistor as a switch and oscillator in our syllabus or not?

Posted by Ash Ash 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Ishika Singh 7 years, 3 months ago

Ya it is in Ur syllabus

2Thank You

ANSWER

If kinetic energy is increased by 300%then what %of momentum is increased?

Posted by Hy Shona 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Hy Shona 7 years, 2 months ago

Thanksr mr101%

0Thank You

Deepak Jindal 7 years, 3 months ago

It is 101% correct answer

1Thank You

Deepak Jindal 7 years, 3 months ago

Increase in momentum will be 100%

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When does an electric dipole placed in a non uniform electric field experience a zero torque but non zero force

Posted by Khushi Jain 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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My chemistry and physics are not so strong plzz help me .my exam is going to start from 24

Posted by Hy Shona 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

G K 7 years, 3 months ago

Nothing is weak or strong it's just ur thinking......first change ur mind that ur phys and chem r weak.......For phys.....Go through conceptual questions given in SL Arora......For Chem....Pradeep's or GRB's conceptual questions.....and of course NCERT is must for CBSE.......ALL THE BEST FOR UR EXAM ??

4Thank You

Deepak Jindal 7 years, 3 months ago

You have to go through revision at glance and conceptual questions

2Thank You

ANSWER

What is a wave

Posted by Soumik Bhattacharjee 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Aryan Rajpoot 7 years, 3 months ago

It is a disturbance created by particles in medium

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Solve Tan inverse x+ 2 cot inverse x= 2π÷3

Posted by Pragati Jain 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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State gausse theorem

Posted by Aakash Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Aryan Rajpoot 7 years, 3 months ago

Gauss theorem states that current passing through any closed surface is equal to the epsilon not times the net charge enclosed by surface

1Thank You

Nitish Sharma 7 years, 3 months ago

E.A=Q(enclosed)/Enot

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A train is moving at a speed of 40 km/h at 10:00 am and at 50 km/h at 10:15 am. Assuming that the train moves along a straight track and the acceleration is constant, find out the value of the acceleration

Posted by Vivek Vivek 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Hy Shona 7 years, 3 months ago

Sorry point of view

0Thank You

Hy Shona 7 years, 3 months ago

Is this questipn from twelfth syllabus or with entrance exam point of you

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We can say that If there is a moisture so light will scattered an we can see different things by scattering light so why we can see stars in the sky there is no moisture

Posted by Meraj Ahmad 5 years, 8 months ago

CBSE > Class 12 > Physics

2 answers

Aryan Rajpoot 7 years, 3 months ago

Who told u that there is no moisture in sky water droplets in the former of vapor are present in atmosphere

4Thank You

Aditya Singh 7 years, 3 months ago

Reflection light

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Proton is moving along the axis of a solenoid carrying current of 2ampre and 50 number of turns per unit lenght . What wil be the force acting on partical

Posted by Sehaj Mohal 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

If four identical particles each of mass m are kept at the four vertices of a square of side length a then find gravitational force of attraction on any one of the particles

Posted by Tanya Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why must electrostatic field at the surface of a charged conductor be perpendicular to every point on it?

Posted by Rohit Tiwary 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Property of electromagnetic wave

Posted by Manish Patel 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Hy Shona 7 years, 3 months ago

They are transverse wave. They not need any medium to travel.

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Why we will take 90 degree in the cartisean plane but not take 45 degree??

Posted by Mohd Taha 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

G K 7 years, 3 months ago

Its standard yrr

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CURRENT ELECTRICITY.......... In NCERT it is given that Vd(drift velocity)=-eEt/m ........BUT....... In HC Verma it given that Vd=-eEt/2m Both the derivation seems to be correct....... But obviously only one is correct.......SO Plzzzz tell me WHICH is correct and also give me reason.........

Posted by G K 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Satyam Op Prajapati 7 years, 3 months ago

No but latest one is also excepted

0Thank You

Harsh Magalam Verma 7 years, 3 months ago

Both are derived in right fashion. But,often NCERT proof is accepted.

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ANSWER

Beauty in physics explain.firstly i clear that it is equation beauty plz do not confuse it with anything.

Posted by Hy Shona 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why cos function can't be taken when dealing with alternating current?

Posted by Lipak Mohapatra 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Satyam Op Prajapati 7 years, 3 months ago

Because cos value starts from higher to lower and ac current starts lower to higher that's why

0Thank You

Chetan Kirola 7 years, 3 months ago

because cos function starts with its peak value and current goes from least value to peak value

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2capacitors of 3meuF are joined in parallel across a battery of 15 volts the charge stored by each will be

Posted by Qamar Ali 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Sidharth Choudhary 7 years, 3 months ago

25v

5Thank You

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What is the need of modulation

Posted by Vishnu Vashisth 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Deepak Jindal 7 years, 3 months ago

1) To seperate signal from dufferent transmitters 2) Size of antenna 3) Reduce band width

1Thank You

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Important topics for Board examinations from Ray optics?

Posted by Nitish Sharma 7 years, 3 months ago

CBSE > Class 12 > Physics

4 answers

G K 7 years, 3 months ago

Yeah u r right...this chap. is really huge...

0Thank You

Nitish Sharma 7 years, 3 months ago

This chapter is huge...

0Thank You

Nitish Sharma 7 years, 3 months ago

Thanks a lot.??

0Thank You

G K 7 years, 3 months ago

Well, if you literally ask me, then I would suggest you the whole chapter. But, if you have very less time , then I would suggest you to go for the 1.derivations of prism formula and its minimum deviations. 2.Also, derivations as well as numerical of lens maker's formula. 3.derivations of microscopes and telescopes. 4.Advantage of reflective type over refractive type.

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The

Posted by Tushar Sachdeva 7 years, 3 months ago

CBSE > Class 12 > Physics