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Electromagnetic Waves
Question
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV, and the stopping potential for a radiation incident on this surface 5 V. The incident radiation lies in
-
X-ray region
-
ultra-violet region
-
infra-red region
-
visible region
Solution
B.
ultra-violet region
Some More Questions From Electromagnetic Waves Chapter
Which of the following electromagnetic waves have the smallest wavelength?
X-rays are used in determining the molecular structure of crystalline because
Assertion: The electromagnetic waves are transverse in nature.
Reason: Waves of wavelength 10 µm are radiowave and microwave.
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Mock Test Series
Mock Test Series