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

• A

  each emitted electron carries one quarter of the initial energy
• B

  number of electrons emitted in half the initial number
• C

  each emitted electron carries half the initial energy
• Correct answer
  D

  number of electrons emitted is a quarter of the initial number

Hence, the correct answer is option: 'D'.