Figure below shows two paths that may be taken by a gas to go from a state A
Figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, 400 J of heat is added to the system and […]
Questions
The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
The two ends of a metal rod are maintained at temperatures 100°C and 110°C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures […]
On observing light from three different stars P, Q and R, it was found that intensity
On observing light from three different stars P, Q and R, it was found that intensity of violet colour is maximum in the spectrum of P, the intensity of green colour is maximum in the […]
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m². Assuming that the pressure inside the house is atmospheric pressure, the force exerted […]
The approximate depth of an ocean is 2700 m. The compressibility of water is
The approximate depth of an ocean is 2700 m. The compressibility of wate4r is 45.4×10⁻¹¹ Pa⁻¹ and density of water is 10³ kg/m³. What fractional compression of water will be obtained at the bottom of […]
Two spherical bodies of mass M and 5 M and radii R and 2 R released in free space
Two spherical bodies of mass M and 5 M and radii R and 2 R released in free space with initial separation between their centres equal to 12 R. If they attract each other due […]
Kepler’s third law states that square of period of revolution (T) of a planet
Kepler’s third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T²=Kr³ here K is […]
Three identical spherical shells, each of mass m and radius r are placed
Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis XX’ which is touching to two shells and passing through diameter of third shell. Moment […]
A rod of weight W is supported by two parallel knife edges A and B is in equilibrium
A rod of weight W is supported by two parallel knife edges A and B is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of […]
A mass m moves in a circle on a smooth horizontal plane with velocity v₀
A mass m moves in a circle on a smooth horizontal plane with velocity v₀ at a radius R₀. The mass is attached to string which passes through a smooth hole in the plane as […]