The quantities of heat required to raise the temperature of two solid copper spheres of radii r1 and r2 () through 1K are in the ratio:
A capillary of radius r is immersed in water and water rises in it to height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r us immersed in water. The mass of water that will rise in this tube is:
A wire of length L. area of cross section A is hanging from fixed support.The length of the wire changes to L1 when mass M is suspended from its free end. The expression for young's Modulus is: