Home
Class 12
PHYSICS
A photoelectric cell is illuminated by a...

A photoelectric cell is illuminated by a point sources of light 1 m away. When the sources is shifted to 2 m then

A

each emitted electron carries one quarter of the initial energy

B

number of electrons emitted is half the initial number

C

each emitted electrons carries half the initial energy

D

number of electrons emitted is quarter of the initial number

Text Solution

Verified by Experts

The correct Answer is:
D
(d) : Photoelectric current `Iprop` intensity of light and intensity `prop(1)/(("distance")^(2))`
`:.prop(1)/(("distance")^(2))`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Einstein'S Photoelectric Equation : Energy Quantum Of Radiation|23 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Particle Nature Of Light : The Photon|19 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Photoelectric Effect|2 Videos

  • CURRENT ELECTRICITY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

What is a point source of light?

A photocell is illuminated by a small bright source placed 1m away. When the same source of light is placed (1/2)m away, the number of electrons emitted by photocathode would

Knowledge Check

  • A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then

    A
    Each emitted electron carries half the initial energy
    B
    Number of electrons emitted is a quarter of the initial number
    C
    Each emitted electron carries one quarter of the initial energy
    D
    Number of electrons emitted is half the initial number

  • A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then

    A
    each emitted electron carries half the initial energy
    B
    number of electrons emitted is a quarter of the initial number
    C
    each emitted electron carries one quarter of the initial energy
    D
    number of electrons emitted is half the initial number

  • A photoelectric cell is illuminated by a point source of light 1 m away . When the source is shifted to 2 m then

    A
    Number of electrons emitted is half the initial number
    B
    Each emitted electron carries half the initial energy
    C
    Number of electrons emitted is a quarter of the initial number
    D
    Each emitted electron carries one quarter of the initial energy

    • Similar Questions

    Explore conceptually related problems

    A photoelectric cell is illuminated by a point source of light 1m away. When the source us shifted to 2m then-

    A photocell is illuminated by a point source of light kept at a distance of 50 cm. If the source is shifted by 50 cm away from the photocell, then

    A caesium photocell , with a steady potential difference of 60 V across , is alluminated by a bright point source of light 50 cm away. When the same light is placed 1 m away the photoelectrons emitted from the cell

    A photo cell is illuminated by a small bright source placed 1m away When the same source of light is placed 2m away, the electrons emitted by photo cathode

    A photocell is illuminated by a small bright source placed l m away. When the same source of light is placed (1/2) m away, the number of electrons emitted by photocathode would

    Home
    Profile