IIT-JEE Exam

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.

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IIT-JEE Other Question

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 Consider a thin square sheet of side L and thickness t, made of a material of
resistivity ρ. The resistance between two opposite faces, shown by the shaded
areas in the figure is
(A) directly proportional to L
(B) directly proportional to t
(C) independent of L
(D) independent of t.