Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at 100ºC, while the other one is at 0ºC. If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is
Body at 100°C temperature has greater heat capacity than body at 0°C so final temperature will be closer to 100°C. So Tc > 50°C
Three liquids of densities 1, 2 and 3 (with 1 > 2 > 3), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact θ1, θ2 and θ3 obey
A rectangular film of liquid is extended from (4 cm × 2cm) to (5 cm × 4 cm). If the work done is 3 × 10–4 J, the value of the surface tension of the liquid is
A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the satellite in terms of g0, the value of acceleration due to gravity at the earth's surface, is
Starting from the centre of the earth having radius r, the variation of g (acceleration due to gravity) is shown by
A light rod of length l has two masses m1 and mattached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is :
