Class 12

29. Electron, Photon, Photoelectric Effect & X-Ray question bank (Physics)

Practice 663 free Class 12 Physics - 29. Electron, Photon, Photoelectric Effect & X-Ray questions with answers and step-by-step solutions.

Q1.

The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate. Light source is put on and a saturation photo current is recorded. An electric field is switched on which has a vertically downward direction. Then  

(A)
The photo current will increase
(B)
The kinetic energy of the electrons will increase
(C)
The stopping potential will decrease
(D)
The threshold wavelength will increase
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Q2.

A photon and an electron have equal energy \( E \). \( \frac{\lambda_{\text{photon}}}{\lambda_{\text{electron}}} \) is proportional to  

(A)
\( \sqrt{E} \)
(B)
\( \frac{1}{\sqrt{E}} \)
(C)
\( \frac{1}{E} \)
(D)
Does not depend upon \( E \)
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Protected Questions

Unlock All 97 Questions in 29. Electron, Photon, Photoelectric Effect & X-Ray

Log in or sign up free to access every question with complete solutions, create chapter practice tests, and track your performance.

Sign up free to access all 97 questions

Unlock every 29. Electron, Photon, Photoelectric Effect & X-Ray question, generate papers, and practice at your own pace.