The following observations are made about the photoelectric effect:1 Options: A . &nbspAll of them. B . &nbsp1, 2 and 4 only. C . &nbsp3 only. D . &nbspNone of them.

The following observations are made about the photoelectric effect:1

Question

The following observations are made about the photoelectric effect:1

Options:

A . All of them.

B . 1, 2 and 4 only.

C . 3 only.

D . None of them.

Answer: Option B

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