IIT-JEE Exam

A block of mass m is on an inclined plane of angle θ. The coefficient of
friction between the block and the plane is μ and tan θ > μ. The block is held
stationary by applying a force P parallel to the plane. The direction of force
pointing up the plane is taken to be positive. As P is varied from P1 = mg (sin
θ – μ cos θ) to P2 mg (sin θ + μ cos θ), the frictional force f is

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IIT-JEE Other Question

A thin flexible wire of length L is connected to two adjacent fixed
points and carries a current I in the clockwise direction, as shown in
the figure. When the system is put in a uniform magnetic field of
strength B going into the plane of the paper, the wire takes the shape
of a circle. The tension in the wire is A real gas behaves like an ideal gas if its
(A) pressure and temperature are both high (B) pressure and temperature are both low
(C) pressure is high and temperature is low (D) pressure is low and temperature is high.