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

there's still a month left nd you're having 3 main subjects give 3-4 to each subject study from your ttn notes don't waste time on sample pprs do all the chapters thoroughly

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Raunak Kumar 6 years, 2 months ago

First you collect your strong chapter and revise it .dont waste time for your weak chapter.do question bank and sample paper

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Anyone plz tell me how to prepare best in last one month???

Posted by Nitin Tomar 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Raunak Kumar 6 years, 2 months ago

Go to sample paper and make it througly

1Thank You

Deepal Parmar 6 years, 2 months ago

Go for previous year question papers

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Define the quality factor in an a.c circuit. Why should the quality factor have high value in receiving circuit? Name the factors on which it depends.

Posted by Educational Veronica 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Class 12 project

Posted by Raushan Kumar 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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What is the definition of ohm's low

Posted by Chetan Sharma 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 6 years, 2 months ago

Ohm’s Law states that the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and other physical conditions remain unchanged. Mathematically it can be represented as,

<center>Potential difference ∝ Current</center> <center>V ∝ I </center>

( When the value of V increases the value of I increases simultaneously)

Where,

V is Voltage in volts (V)
R is Resistance in ohm (Ω)
I is Current in Ampere (A)

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Is anyone having blue print of physics class 12 as per latest cbse syllabus ?

Posted by Ashish Ahirwar 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

♥️Bhavika Naik?? 6 years, 2 months ago

Ull get on this app

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Prinipal of chooke coil

Posted by Manish Rajput 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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question on halfwave rectifier

Posted by Gayathri S Krishna 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Give some question that youe external ask u In your boards practical 2019-20

Posted by Shriyash Verma 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Vinay Gautam 6 years, 2 months ago

In physics he asked about the working model

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Deepti Maurya 6 years, 2 months ago

In chemistry examinar asked for normality and poff rule

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Sir physics' ke questions bato important

Posted by Sonu Rao 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Aayushmaan Singh 6 years, 2 months ago

Do all the derivations celarly and perfectly 1st then look fo imp numericals. Moreover u can look fo 1mark or 2mark conceptial question from refrence books as the no of 1mark ques get increased. I prefer u sl arora , it is best fpr physic.

2Thank You

Ayush Anand 6 years, 2 months ago

Cyclotron derivation wheat stone bridge rlc circuit lcr rc circuit lr circuit rms derivation efi at an axial dipole efi at an equitorial dipole mfi at an cirular loop Gauss law and its application amperes law and its application youngs double sit experiment doplers effect KE of electron in nth orbital of hydrogen atom

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Two wires A and B of equal mass and same material are taken. The diameter of A is 1/2 the diameter of B. If the resistance of A is 24 ohm. Calculate the resistance of B.

Posted by Meenakshi R.Narayanan 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

A Yadav 6 years, 2 months ago

6 ohm

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Two protons of equal Kinetic energies enter a region of uniform magnetic field. the first Proton enters normal to the field direction while the second enters at 30 degree to the field direction name the trajectories follow by them.

Posted by Sneha Singh 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Aayush Singh 6 years, 2 months ago

For 1st proton: F= qvBsin90° Fmax=qvB For 2nd proton F=qvBsin30° =qvB/root3

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Experiment

Posted by Mohit Yadav 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Electrostatic me kon kon priof aayega board me

Posted by Mohan Kumar 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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How to make a model of tangential gakvanometer for ckass 12

Posted by Sneha Pal 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Fermi energy level of p type and n type

Posted by Bargavi Guru Prasanna 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Prashant Singh 6 years, 2 months ago

Jo upar likha h vo hi shi h

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Neha Choudhary 6 years, 2 months ago

For p type semiconduct it present near valanc bond For n type it is present near conduction bond

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Lc ocillator introduction and working

Posted by Himanshu Yadav 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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I am not getting all sample paper

Posted by Kabir Kumar 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Akshat Nautiyal 6 years, 2 months ago

Okkkkkk

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Mansi Srivastava 6 years, 2 months ago

Okk

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Ac generator derivations

Posted by Shiny Renji 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ankit Mishra 6 years, 2 months ago

Dedect the current

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Explain the working of half wave rectifire??

Posted by Nayana Rajput 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 6 years, 2 months ago

The half wave rectifier has both positive and negative cycles. During the positive half of the input, the current will flow from positive to negative which will generate only positive half cycle of the a.c supply. When a.c supply is applied to the transformer, the voltage will be decreasing at the secondary winding of the diode. All the variations in the a.c supply will reduce and we will get the pulsating d.c voltage to the load resistor.
In the second half cycle, current will flow from negative to positive and the diode will be reverse biased. Thus, at the output side, there will be no current generated and we cannot get power at the load resistance. A small amount of reverse current will flow during reverse bias due to minority carriers.

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Physics textbook pg no 367 Solution of ex 10.4 d For the interference fringes to be seen the condition Plzz explain

Posted by Shivam Sharma 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Give all information about step down transformer for viva questions

Posted by Sejal Uniyal 6 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ankit Mishra 6 years, 2 months ago

Decease the volteg up to heigh

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Diffraction effects show that light does not travel in straight lines .Under what condition the concept of ray optics are valid.(D=distance of screen from the slit) (a)D<freshnel distance. (b)D=freshnel distance. (c)D>freshnel distance. (d)D<<freshnel distance.

Posted by Subham Sahu 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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How plastic plastic Attract each other

Posted by Srishty Sidana 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Aayush Singh 6 years, 2 months ago

Due to rubbing the e- transfar takes place and hence, coulombic forces of attraction between them

2Thank You

Komal Kumar 6 years, 2 months ago

This may be due to presence of weak vander waals forces ?❗? both.and these are the weakest forces of nature.while you cant see them moving and getting sticked with one another.

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How plastic attract each other

Posted by Srishty Sidana 6 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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What is science?

Posted by Anupam Verma 6 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Aayush Singh 6 years, 2 months ago

Science is the key to study nature

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Komal Kumar 6 years, 2 months ago

Science is a very beautiful thing.it has the way to answer and explain the things very logically.it makes us joined with nature and natural phenomena.it makes us human becaise among animals only human has brain or say the ability to think in beneficial way.thus it teaches us the way of thinking.i think that it may be pretty ckear to u

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What is the efficiency of full wave rectifier?

Posted by Jasdeep Kaur 6 years, 2 months ago

CBSE > Class 12 > Physics