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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 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years 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 8 years ago

CBSE > Class 12 > Physics

2 answers

Aayisha Azeez 8 years ago

Cool nàa don't want to worry ????

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Aayisha Azeez 8 years ago

Go through the important topic

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Is steady current the only source of magnetic field

Posted by Harsh Goyal 8 years ago

CBSE > Class 12 > Physics

1 answers

Shivan Tiwari 8 years ago

No displacement current also produce magnetic field

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Single slit exp. Derivation any body give me

Posted by Shivan Tiwari 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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

Posted by Praveen Mishra 8 years ago

CBSE > Class 12 > Physics

0 answers

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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 8 years 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 8 years ago

CBSE > Class 12 > Physics

5 answers

Vineet Kumar Gupta 8 years 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 8 years ago

Wlcm ?

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Yuthika Yadav 8 years ago

Thanks ayushi

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Radhika Tyagi 8 years ago

Gud ans

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Yuthika Yadav 8 years 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 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Prove : tau= 1/lambda

Posted by Vinayak Luha 8 years 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 8 years ago

CBSE > Class 12 > Physics

1 answers

Shivi Rajput 8 years 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 8 years ago

CBSE > Class 12 > Physics

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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 8 years 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 8 years ago

CBSE > Class 12 > Physics

2 answers

Ritu Gupta 8 years 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 8 years 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 8 years ago

CBSE > Class 12 > Physics

1 answers

Jatin Goyal 8 years 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 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Binding energy is imp or not

Posted by Samiksha Joshi 8 years ago

CBSE > Class 12 > Physics

2 answers

Akshay Singh 8 years ago

Very important specially the curve

1Thank You

Priyanka Bohra 8 years ago

Learn binding energy curve

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What is inrerference of light

Posted by Ram Maru 8 years ago

CBSE > Class 12 > Physics

3 answers

Namami Shukla 8 years ago

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

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Daksh Bhardwaj 8 years 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 8 years 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 8 years ago

CBSE > Class 12 > Physics