A monochromatic source of light is placed at a large distance \( \mathrm{d} \) from a metal surf....

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A monochromatic source of light is placed at a large distance \( \mathrm{d} \) from a metal surface. Photoelectrons are ejected at rate n, the kinetic energy being \( E \). If the
\( \mathrm{P} \)
source is brought nearer to distance \( d / 2 \), the rate and kinetic energy per photoelectron become nearly
(1) \( 2 \mathrm{n} \) and \( 2 \mathrm{E} \)
(2) \( 4 \mathrm{n} \) and \( 2 \mathrm{E} \)
(3) \( 4 \mathrm{n} \) and \( \mathrm{E} \)
(4) \( n \) and \( 4 \mathrm{E} \)


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