Test SeriesFree PYQsExamsPricing

NEET 2013 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2013

For photoelectric emission from certain metal the cutoff frequency is . If radiation of frequency impinges on the metal plate, the maximum possible velocity of the emitted electron will be ( is the electron mass) -

Answer: (3)

Solution

The cutoff (threshold) frequency is , so the work function is . By Einstein's photoelectric equation . $Missing argument for \tfrac\tfrac12 m = 2hν - hν = hν

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-091331