Question

A rigid body is rotating with a constant angular
velocity w about a fixed axis, if v is the velocity of
a point of the body, prove that v x v= 2w​

Answer 1

Answer:

Explanation:Aperture of a lens is the effective diameter of its light transmitting area. Therefore, the brightness i.e. the intensity of the image formed by a lens which depends on the amount of light passing through the lens will vary as the square of the aperture of the lens.ok thanks