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When light of wavelength 300 nm (nano meter) falls on a photoelectric emitter, photo electrons are liberated. For another emitter, however, light of 600 nm wavelength is sufficient for creating photo emission. What is the ratio of the work functions of the two emitters?
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- 1 : 2
- 2 : 1
- 4 : 1
- 1 : 4
Correct Option: B
| W0 = | or W0 ∝ | ; | ||
| λ0 | λ0 |
| ⇒ | = | = | = 2 | |||
| W2 | λ1 | 300 |
