Dual Nature Of Light Question 339
Question: For photoelectric emission, tungsten requires light of 2300 Å. If light of 1800 Å wavelength is incident then emission [AFMC 2005]
Options:
A) Takes place
B) Don?t take place
C) May or may not take place
D) Depends on frequency
Show Answer
Answer:
Correct Answer: A
Solution:
In tungsten, photoemission take place with a light of wavelength 2300 Å. As emission of electron is inversely proportional to wavelength, all the wavelengths smaller then 2300 Å will cause emission of electrons.
BETA
