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A sample of gas goes from state A to state B in four different manners, as shown by the graphs. Let W be the work done by the gas and delta U be change in internal energy along the A sample of gas goes from state A to state B in four different manners as [...]

The figures given below show different processes (relating pressure P and volume V) for a given amount for an ideal gas. delta W is work done by the gas and delta Q is heat The figures given below show different processes (relating pressure P and volume V) for a given amount for an ideal gas. [...]

An ideal monatomic gas at initial temperature T0 expands from initial volume V0 to volume 2V0 by each of the five processes indicated in the T-V diagram in the given figure. An ideal monatomic gas at initial temperature T0 expands from initial volume V0 to volume 2V0 by each of the five processes indicated in [...]

An object is placed at 20 cm from a convex mirror of focal length 20 cm, The distance of the image from the pole of the mirror is : An object is placed at 20 cm from a convex mirror of focal length 20 cm The distance of the image from the pole of the [...]

Consider a thermodynamic cycle in a PV diagram shown in the figure performed on one mole of a monatomic gas, The temperature at A is T0 and volume at A and B are related Consider a thermodynamic cycle in a PV diagram shown in the figure performed on one mole of a monatomic gas The [...]

A thermally insulated chamber of volume 2 VQ is divided by a frictionless piston of area 5 into two equal parts A and B. Part A has an ideal gas at pressure P0 and temperature T0 A thermally insulated chamber of volume 2 VQ is divided by a frictionless piston of area 5 into two [...]

A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card, the effect would be A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card the [...]

A spherical mirror forms an erect image three times the size of the object, If the distance between the object and the image is 80 cm. The nature and the focal length of the mirror are A spherical mirror forms an erect image three times the size of the object If the distance between the [...]

Three identical adiabatic containers A, B and C contain helium, neon and oxygen respectively at equal pressure. The gases are pushed to half their original volumes: B and C contain helium neon and oxygen respectively at equal pressure. The gases are pushed to half their original volumes: Three identical adiabatic containers A October 29, 2020 [...]

A horizontal circular platform is free to rotate about its centre. a block of mass m is placed at distance l from centre on the plateform. The coefficient of friction between plateform and the block is u if space is gravity free, then find the time after which the block starts to slip. What is [...]