The velocity of sound in air will be doubled if it's absolute temperature is
A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is
An elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is
Calculate the angle of minimum deviation for a ray which is refracted through an equiangular prism of refractive index 1.4
