A body of mass 6kg rests on an inclined plane. The normal reaction is R, and the limiting frictional force is F as shown in the image above. if F = 30N, and g = 10ms\(^{-2}\) then the angle of inclination \( \theta \) is
The effect of closing the key K in the circuit shown above would be to
in a light experiment with a convex lens a student plotted a graph as shown above of the reciprocal of object distance (1)/u against the reciprocal of image distance (1)/v . the focal length of the lens is given as
