IIT-JEE Exam

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

Read Solution (Total 0)

IIT-JEE Other Question
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. A student uses a simple pendulum of exactly 1 m length to determine g, the acceleration due to gravity. He
uses a stop watch with the least count of 1 second fore this and records 40 seconds for 20 oscillations. For
this observation, which of the following statement(s) is (are) true ?
(A) error ΔT in measuring T, the time period, is 0.05 seconds
(B) error ΔT in measuring T, the time period, is 1 second
(C) percentage error in the determination of g is 5%
(D) percentage error in the determination of g is 2.5%.