Threshold frequency of a metal is fo. When light of frequency v = 2fo is incident on the metal plate, maximum velocity of e- emitted is v1, when frequency of incident radiation is 5fo, maximum velocity of emitted e- is v2. then the ratio of v1/v2 is
Correct answer: B. 1:2
- A. 1:4
- B. 1:2
- C. 2:1
- D. 3:2
Explanation
When the frequency of incident radiation changes from 2fo to 5fo, the maximum velocity of emitted electrons changes in an inverse proportion. Therefore, the correct ratio of v1/v2 is 1:2. Option A, C, and D do not align with this relationship.
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