Dual Nature Of Light Question 284
Question: A beam of light of wavelength $ \lambda $ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then [BHU 1994]
Options:
A) $ N\propto L $ and $ E\propto L $
B) $ N\propto L $ and $ E\propto \frac{1}{\lambda } $
C) $ N\propto \lambda $ and $ E\propto L $
D) $ N\propto \frac{1}{\lambda } $ and $ E\propto \frac{1}{L} $
Show Answer
Answer:
Correct Answer: B
Solution:
Number of photons emitted is proportional to the intensity. Also $ \frac{hc}{\lambda }=W_{0}+E $ .
BETA
