IIT-JEE Exam

A ray OP of monochromatic light is incident on the face AB of prism ABCD
near vertex B at an incident angle of 60º...If the refractive index of
the material of the prism is sqrt(3) , which of the following is (are) correct ?
(A) the ray gets totally internally reflected at face CD
(B) the ray comes out through face AD
(C) the angle between the incident ray and the emergent ray is 90º
(D) the angle between the incident ray and the emergent ray is 120º.

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IIT-JEE Other Question

A few electric field lines for a system of two charges Q1 and Q2 fixed
at two different points on the x–axis..These
lines suggest that
(A) |Q1| > |Q2|
(B) |Q1| < |Q2|
(C) at a finite distance to the left of Q1 the electric field is zero
(D) at a finite distance to the right of Q2 the electric field is zero. One mole of an ideal gas in initial state A undergoes a cyclic process
ABCA, as shown in figure. Its pressure at A is P0. Choose the correct
option(s) from the following :
(A) internal energies at A and B are the same
(B) work done by the gas is process AB is P V ln4