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The potential energy U between two molecules as a function of the distance X between them has been shown in the figure. The two molecules are *Image* a) Attracted when x lies between A and B and are repelled when X lies betwe ...

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*Image* A solid iron sphere of radius=1m is just submerged in a water tank. A point source of light is kept vertically above its center at a distance 1m from the water surface. Find the area of the sphere's shadow. Refractive ...

Assertion: If pressure of an ideal gas is doubled and volume is halved, then its internal energy will remain unchanged. Reason: Internal energy of an ideal gas is a function of temperature only. ...

Assertion: In a standing wave x=0 is a node. Then total mechanical energy lying between x=0 and x= λ/4 is not equal to the energy lying between x= λ/4 and x= λ/2 . Reason: In standing waves different particles oscillates w ...

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Assertion: In series combination, charges on two capacitors are always equal. Reason: If charges are same, the total potential difference applied across two capacitors will be distributed in inverse ratio of capacities. ...

Assertion: Electric field produced by a variable magnetic field can't exert a force on a charged particle. Reason: This electric field is nonconservative in nature. ...

Assertion: In series LCR circuit, voltage will lead the current function for frequency greater than the resonance frequency. Reason: At resonance frequency, phase difference between current function and voltage function is ...

Assertion: A small electric dipole is moved translationally from higher potential to lower potential in uniform electric field. Work done by electric field is positive. Reason: When a positive charge moved from higher to lowe ...

Assertion: A charge particle is moving in a circle with constant speed in uniform magnetic field. If we increase the speed of the particle to twice, its acceleration will became four times. Reason: In circular path of radius ...

A ball is thrown vertically upward from the 12 metre level with an initial velocity Of 18 metres / second. At the same instant an open platform elevator passes the 5 metre level, moving upward with a constant velocity of 2 me ...

Assertion: A solid sphere and a hollow sphere are rolling on the ground with same total K.E. If transnational K.E of solid sphere is K, then translation energy of hollow sphere should be greater than k. Reason: In case of hol ...

The maximum tension in the string of an oscillating pendulum is double of the minimum tension . Find the angular amplitude . ...

A ball is thrown vertically upward from the 12 metre level with an initial velocity Of 18 metres / second. At the same instant an open platform elevator passes the 5 metre level, moving upward with a constant velocity of 2 me ...

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