Question

A parallel beam of light is incident on a
converging lens parallel to its principal axis. As
one moves away from the lens on the other side
on its principal axis, the intensity of light
(a) remains constant
(b) continuously increases
(c) continuously decreases
(d) first increases then decreases

Answer 1

Answer:

d is the correct option and answer

because as it moves away , automatically the light intensity decreases

hope it's hepls u

Answer 2

A parallel beam of light is incident on a  converging lens parallel to its principal axis. As  one moves away from the lens on the other side  on its principal axis, the intensity of light first increases then decreases

Explanation:

Option (d) is correct.

• Since all light beams are parallel to the main axis, they converge at the focal point of a converging lens.
• Thus, the light intensity increases until one hits the target, and then starts to decrease as one passes beyond it.

intensity of light:- Light intensity relates to the amount or strength of light emitted by a given source of light. It is the estimate of wavelength weighted power released by a source of light.

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The intensity of light depends on -

1) amplitude

2) frequency

3) wavelength

4)none

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