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Dipoles of electric and potential,drift velocity and mobilty and all, moving coil galvanometer,cyclotron, MF on the axis of loop, self and mutual induction, lens makers huygens principle ,diffraction double and single slit, photoelectric effect theories,radius velocity and total energy of atom, half life mean life nuclei and diagrams or graphs, transistors , zener diode, LCR circuit lc oscillations q factor impedence

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When light of wavelength 400nm incident on the cathode of a photo cell, The stopping potential is recorded 6v . If the wavelength of light is increased to 600 nm , calculate the new stopping potential .

Posted by Srishty Saini 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 7 years, 6 months ago

eV°1 = hc/lambda1 -W° -------------------------------- eq. 1. eV° 2 =hc/lambda2 -W° ------ eq2. Now substraction eq.2 from eq1 you will get. e(V°1 - V°2 )= hc(1/lambda1- 1/lambda 2) V°1 = 6 V .......... lambda 1 = 400nm and lambda2 = 600nm. . e= 1.6 ×10^-19 . Solve for V° 2

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plzz help me how to study

Posted by Anjali Anjali 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Aayisha Azeez 7 years, 6 months ago

Cool nàa don't want to worry ????

1Thank You

Aayisha Azeez 7 years, 6 months ago

Go through the important topic

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Is steady current the only source of magnetic field

Posted by Harsh Goyal 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Shivan Tiwari 7 years, 6 months ago

No displacement current also produce magnetic field

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ANSWER

Single slit exp. Derivation any body give me

Posted by Shivan Tiwari 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

If magnetism obey relativistic property then why there is no doppler effective.

Posted by Praveen Mishra 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

can we trust Rk mishra sir....he has put his good effort in making his video....the video os on sub physics....on youtube..

Posted by Elina M 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

In which condition the lens combination will act as a plane glass sheet ?????

Posted by Shivi Rajput 7 years, 6 months ago

CBSE > Class 12 > Physics

5 answers

Vineet Kumar Gupta 7 years, 6 months ago

even when refractive index of the material will be equal to the medium u1=u2 it will acts as a glass

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Radhika Tyagi 7 years, 6 months ago

Wlcm ?

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Yuthika Yadav 7 years, 6 months ago

Thanks ayushi

1Thank You

Radhika Tyagi 7 years, 6 months ago

Gud ans

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Yuthika Yadav 7 years, 6 months ago

When the two lenses are of opposite nature having same focal length and placed in contact with each other.

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What is the end error in a meter bridge?

Posted by Abhi Kumar 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Prove : tau= 1/lambda

Posted by Vinayak Luha 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Anyone please give a lucid explanation of figure no. 11.6 (page number 401 , physics vol 2 ncert)

Posted by Vinayak Luha 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Shivi Rajput 7 years, 6 months ago

It's not important

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Prove that 3^2n -1 is divisible by 2 . n is ofcourse an non zero positive integer.

Posted by Vinayak Luha 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Has any one clearly understood the derivation of working of transistor as an amplifier as per the text given in our ncert book ?? if yes please do tell how to get the eqn. given just next to eqn no . 14.16 ??

Posted by Vinayak Luha 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define modulation index? why is it kept low? What is the role of bandmass filter!?

Posted by Daksh Bhardwaj 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Ritu Gupta 7 years, 6 months ago

Modulation index is the ratio of amplitude of message signal to the amplitude of carrier wave. It is kept low so that no distortion will occur(<=1). Bandpass filter rejects dc and sinusoids of higher and lower frequency and allows a band of frequency.

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Akshay Singh 7 years, 6 months ago

It is bandpass

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A charge q' is moved from a point A above a dipole of dipole moment P' to point B below the dipole equatorial plane without acceleration. Find work done in the process.

Posted by Daksh Bhardwaj 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Jatin Goyal 7 years, 6 months ago

Zero

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ABCD is a square of side 2m Charges of 5nC, +10nC and -5nC are placed at corners A B and C. What is the work done in transferring a charge of 5microC from D to a point of intersection of diagonals

Posted by Jyotsna Angadi 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Binding energy is imp or not

Posted by Samiksha Joshi 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Akshay Singh 7 years, 6 months ago

Very important specially the curve

1Thank You

Priyanka Bohra 7 years, 6 months ago

Learn binding energy curve

1Thank You

ANSWER

What is inrerference of light

Posted by Ram Maru 7 years, 6 months ago

CBSE > Class 12 > Physics

3 answers

Namami Shukla 7 years, 6 months ago

Phenomenon of superposition of two coherent waves in the region of superposition

1Thank You

Daksh Bhardwaj 7 years, 6 months ago

The phenomenon of non-uniform distribution of energy in the medium due to superposition of two light waves is called interference of light

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Akshay Singh 7 years, 6 months ago

When 2 or more light waves are superimposed at a point ,then the resultant intensity at that point is the individual sum of the intensity of the 2 waves

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Can we use neutron in cyclotron

Posted by Samiksha Joshi 7 years, 6 months ago

CBSE > Class 12 > Physics