Atomic Structure Question 435

Question: If the wavelength of the electromagnetic radiation is increased to thrice the digital value, then what will be the percent change in the value of frequency of the electromagnetic radiation.

Options:

A) Increases by 33%

B) Decreases by 33%

C) Increases by 66%

D) Decreases by 66%

Show Answer

Answer:

Correct Answer: D

Solution:

  • v1=cλ1

v2=cλ2=c3λ1 % change in frequency =v2V1v1×100

=c3λ1cλ1cλ1×100=2c3λ1×100cλ1

=66 %



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