JEE Mains 29-Jan-2023 Shift 1 Solved Paper

Section: Physics

Question : 18 of 90

Marks: +1, -0

The threshold wavelength for photoelectric emission from a material is 5500Å. Photoelectrons will be emitted, when this material is illuminated with monochromatic radiation from a
A. 75W infra-red lamp
B. 10W infra-red lamp
C. 75W ultra-violet lamp
D. 10W ultra-violet lamp
Choose the correct answer from the options given below :

[29-Jan-2023 Shift 1]

B and C only
A and D only
C only
C and D only

Validate

Go to Question:

Prev Question

Next Question