IIT-JEE Exam

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.

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IIT-JEE Other Question

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. A thin uniform annular disc (see figure) of mass M has outer radius 4R and
inner radius 3R. The work required to take a unit mass from point P on its
axis to infinity is