A flashlight\'s light is shinning on a wall. If the beam is changed so that the

ID: 1651841 • Letter: A

Question

A flashlight's light is shinning on a wall. If the beam is changed so that the area the light covers doubles, what happens to the brightness? A The brightness halves B The brightness stays the same C The brightness doubles D Brightness has no rigorous definition A flashlight's light is shinning on a wall. If the beam is changed so that the area the light covers doubles, what happens to the brightness? A The brightness halves B The brightness stays the same C The brightness doubles D Brightness has no rigorous definition A flashlight's light is shinning on a wall. If the beam is changed so that the area the light covers doubles, what happens to the brightness? A The brightness halves B The brightness stays the same C The brightness doubles D Brightness has no rigorous definition

Explanation / Answer

Brightness only depends upon amplitude and wavelength of the light beam used it does not depends up the area on which it fall so the brightness stays the same hence

OPTION B is correct.

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A flashlight\'s light is shinning on a wall. If the beam is changed so that the

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