Two arteries are of same length and ratio of their radius is 1: 3. The pressure difference across ends of both arteries are same. Find out the ratio of rate of flow.

Two planets of same density have the ratio of their radii as 1 : 3. The ratio of escape speed on them will be

Heat is flowing through two cylindrical rods of the same material. The diamters of the rods are in the ratio 1: 2 and the length in the ratio 2 : 1 . If the temperature difference between the ends is same then ratio of the rate of flow of heat through them will be

Heat is flowing through two cylindrical rods of the same material . The diameters of the rods are in the ratio 1:2 and the lengths in the ratio 2:1.If the temperature difference between the ends be the same ,then the ratio of the rate of flow if heat through them will be ?

Water flows in a streamline manner through a capillary tube of radius a. The pressure difference being P and the rate of flow is Q . If the radius is reduced to a//2 and the pressure difference is increased to 2P, then find the rate of flow.

A sphere, a cylinder and a cone are of the same radius and same height. Find the ratio of their curved surface.

A sphere, a cylinder and a cone are of the same radius and same height. Find the ratio of their curved surface.

A sphere, a cylinder and a cone have the same radius and same height. Find the ratio of their volumes.

The ratio of the thermal conductivities of two different materials is 1 : 2 . The thermal resistance of the rods of these materials having the same thickness are equal. Find the ratio of the length of rods.

Ratio of energy density of two steel rods is 1 : 4 when same mass is suspended from the rods. If length of both rods is same then ratio of diameter of rods will be.

The ratio of the diameters of two metallic rods of the same material is 2 : 1 and their lengths are in the ratio 1 : 4 . If the temperature difference between their ends are equal, the rate of flow of heat in them will be in the ratio