Physics-
General
Easy
Question
One mole of a monoatomic ideal gas occupies two chambers of a cylinder partitioned by means of a movable piston. The walls of the cylinder as well as the piston are thermal insulators. Initially equal amounts of gas fill both the chambers at 
A coil is burnt in the left chamber which absorbs heat and expands, pushing the piston to the right. The gas on the right chamber is compressed until to pressure becomes 32 
. The final volume of left chamber is
The correct answer is:
Since the compression on the right is adiabatic so 
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where 
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Figure shows the variation of the internal energy U with density r of one mole of an ideal monatomic gas for thermodynamic cycle ABCA. Here process AB is a part of rectangular hyperbola :-
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Suppose 0.5 mole of an ideal gas undergoes an isothermal expansion as energy is added to it as heat Q. Graph shows the final volume 
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Figure demonstrates a polytropic process (i.e. 
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The gas left in the vessel will be 2g of hydrogen i.e. number of moles
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Physics-General
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A vessel contains 14 g (7 moles) of hydrogen and 96 g (3 moles) of oxygen at STP. Chemical reaction is induced by passing electric spark in the vessel till one of the gases is consumed. The temperature is brought back to it's starting value 273 K. The pressure in the vessel is-
A vessel contains 14 g (7 moles) of hydrogen and 96 g (3 moles) of oxygen at STP. Chemical reaction is induced by passing electric spark in the vessel till one of the gases is consumed. The temperature is brought back to it's starting value 273 K. The pressure in the vessel is-
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A fine steel wire of length 4m is fixed rigidly in a heavy brass frame as shown in figure. It is just taut at 
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A fine steel wire of length 4m is fixed rigidly in a heavy brass frame as shown in figure. It is just taut at . The tensile stress developed in steel wire if whole system is heated to is :–
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Figures shows the expansion of a 2m long metal rod with temperature. The volume expansion coefficient of the metal is :–
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The figure shows two thin rods, one made of aluminum and the other of steel . Each rod has the same length and the same initial temperature. They are attached at one end to two separate immovable walls. Temperature of both the rods is increased by the same amount, until the gap between the rods vanishes. Where do the rods meet when the gap vanishes?
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – 
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Given cross-section area of jet 
velocity of jet 
., density of liquid 
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet velocity of jet ., density of liquid of cart .The power supplied to the cart, when its velocity becomes 5 m/sec., is equal to :
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet velocity of jet ., density of liquid of cart .The time at which velocity of cart becomes 2 m/sec, is equal to
on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet velocity of jet ., density of liquid of cart .The time at which velocity of cart becomes 2 m/sec, is equal to
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