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Which of the following statements is incorrect?

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Particle nature of radiations can be experimentally demonstrated by Compton effect

Wave nature of electrons can be experimentally demonstrated by diffraction experiment

The value of Planck's constant, h is $6.62 \times 10^{- 34} J.s$

Intensity of light is directly proportional to its frequency

answer is D.

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Detailed Solution

1, 2, 3 statements are correct, 4^th one is incorrect because each photon can eject one electron on increasing the intensity of light of a given frequency, the number of photons striking the surface is increased but kinetic energy remains unchanged.

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