IIST Question Paper

I want the question paper of Indian Institute of Space Science and Technology IIST ISAT Exam so can you provide me?

[pawan]

Ok, here I am providing you the question paper of Indian Institute of Space Science and Technology IIST ISAT Exam.

IIST ISAT Exam question paper

Physics-

Suppose the particle starts from r = oo with a kinetic energy just enough to reach r = R. Its kinetic
energy at r = R/2 will be
(A) k/R
(B) (5/8)(k/R)
(C) (3/8)(k/R)
(D) 0

Let a particle have an instantaneous position ~r(t), velocity ~v(t) and acceleration ~a(t). Necessary conditions
for it to be considered as an instantaneous circular motion about the origin are
(A) ~r.~v = 0 ; ~a.~v = 0 ; ~a.~r < 0
(B) ~r.~v = 0 ; ~a.~v = 0 ; ~a.~r > 0
(C) ~r.~v > 0 ; ~a.~v = 0 ; ~a.~r = 0
(D) ~r.~v = 0 ; ~a.~v > 0 ; ~a.~r < 0

The central fringe in a Young’s double slit experiment with the He-Ne laser (λ = 632.8 nm) has intensity
I0. If one of the slits is covered by a 5µm thick film of plastic (refractive index = 1.4), the intensity
becomes I1. The ratio I1/I0 is close to
(A) 3/16
(B) 1/4
(C) 1/2
(D) ¾

A polarizer is introduced in the path of a beam of unpolarized light incident on a block of transparent
material (refractive index = p3). The polarizer can be placed such that its axis is parallel (P) or normal
(N) to the plane of incidence. The incident beam makes an angle θ with the surface of the block. The
light will be completely transmitted if
(A) θ = 30◦ and the polarizer is placed in P
(B) θ = 30◦ and the polarizer is placed in N
(C) θ = 60◦ and the polarizer is placed in P
(D) θ = 60◦ and the polarizer is placed in N

Laplace correction to the speed of sound is made only for gases and not for solids and liquids. This is
because, in comparison to gases, liquids and solids have
(A) larger thermal conductivity
(B) much smaller compressibility
(C) much smaller coefficient of thermal expansion
(D) much smaller relative pressure change when the wave is passing through them.

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