Question

Why does a light from a torch reach up to only certain distance?

Answer 1

With the increase in the distance there is decrease in the luminous intensity of the light

Explanation:

• The luminous intensity is directly proportional to the square of the distance between the source of production of light and the place where the luminous intensity is measured.
• As a result of this with increase in distance the luminous intensity becomes so low that it is not visible to the eye.

To know more,

Write S.I unit of luminous intensity and temperature? CLASS - XI ...

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Answer 2

With the increase in the distance there is decrease in the luminous intensity of the light.

Explanation:

• The luminous intensity is directly proportional to the square of the distance between the source of production of light and the place where the luminous intensity is measured.

• As a result of this with increase in distance the luminous intensity becomes so low that it is not visible to the eye.