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NEET 2003
Exam
NEET
Year
2003
Subject
Physics
Chapter
Dual Nature of Matter

NEET 2003 · Physics · Dual Nature of Matter

A photoelectric cell is illuminated by a point source of light 1 ~m...

A photoelectric cell is illuminated by a point source of light 1 m1 \mathrm{~m} away. When the source is shifted to 2 m2 \mathrm{~m} then:

Options

  1. Aeach emitted electron carries one quarter of the initial energy
  2. Bnumber of electrons emitted in half the initial number
  3. Ceach emitted electron carries half the initial energy
  4. Dnumber of electrons emitted is a quarter of the initial number

Correct answer

D. number of electrons emitted is a quarter of the initial number

Step-by-step solution

For a point source I∝1r2\mathrm{I} \propto \frac{1}{r^2}
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