Give me question paper for Physics Subject West Bengal Joint Entrance Examination as soon as possible ?

Here I am giving you question paper for Physics Subject West Bengal Joint Entrance Examination in PDF file attached with it so you can get it easily.

3. The r.m.s. speed of the molecules of a gas at 100°C is ν. The temperature at which the r.m.s. speed will be 3ν is
(A) 546°C (B) 646°C (C) 746°C (D) 846°C
Ans : (D)


5. A frictionless piston-cylinder based enclosure contains some amount of gas at a pressure of 400 kPa. Then heat is
transferred to the gas at constant pressure in a quasi-sta ic process. The piston moves up slowly through a height of
10cm. If the piston has a cross-section area of 0.3 m2, the work done by the gas in this process is
(A) 6 kJ (B) 12 kJ (C) 7.5 kJ (D) 24 kJ
Ans : (B)

8. A bar magnet has a magnetic moment of 200 A.m2. The magnet is suspended in a magnetic field of 0.30 NA–1 m–1. The
torque required to rotate the magnet from its equilibrium position through an angle of 30°, will be
(A) 30N m (B) 30 3 N m (C) 60 N m (D) 60 3 N m
Ans : (A)

10. An ideal mono-atomic gas of given mass is heated at constant pressure. In this process, the fraction of supplied heat
energy used for the increase of the internal energy of the gas is
(A) 3/8 (B) 3/5 (C) 3/4 (D) 2/5
Ans : (B)


11. The velocity of a car travelling on a straight road is 36 kmh–1 at an instant of time. Now travelling with uniform
acceleration for 10 s, the velocity becomes exactly double. If the wheel radius of the car is 25 cm, then which of the
following numbers is the closest to the number of revolutions that the wheel makes during this 10 s?
(A) 84 (B) 95 (C) 126 (D) 135
Ans : (B)

16. A wire of initial length L and radius r is stretched by a length l. Another wire of same material but with initial length 2L
and radius 2r is stretched by a length 2l. The ratio of the stored elastic energy per unit volume in the first and second
wire is,
(A) 1 : 4 (B) 1 : 2 (C) 2 : 1 (D) 1 : 1
Ans : (D)

Attached Files

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