Below I am providing you some questions of from question paper of IIST entrance exam and attaching a PDF attachment which has detail information regarding this that you can down load for free:

To reduce the de-Broglies wave length of an electron from 100 pm to 50 pm,
the required increase in energy is :
(1) 150 eV (2) 300 eV (3) 450 eV (4) 600 eV

The angular width of fringes in Young’s bislit experiment is 0.200 with the
wavelength 5890 Å. If the whole apparatus is dipped in water, the angular
width will be :
(1) 0.300 (2) 0.220 (3) 0.150 (4) 0.110
Capacitance of a capacitor made by a thin metal foil is 2 μ μ F. If the foil is
filded with paper of thickness 0.15 mm. and dielectric constant of paper is
2.5, width of paper is 40 mm. then length of foil will be :
(1) 33.9 mm. (2) 13.4 mm. (3) 1.33 mm (4) 0.34 mm.

Ultra sonic sound can be observed by :
(1) Telephone (2) Hebb method (3) Quincke tube (4) Kundit tube

Which two of the given transverse waves will give stationary wave when get
super imposed :
z1= a cos (kx - ωt) ….. A
z2 = a cos (kx _cot ) …..B
z3 = a cox (ky - ωt) …..C
(1) A and B (2) A and C (3) B and C (4) any two

IIST entrance exam sample paper

Attached Files

IIST entrance exam sample paper.pdf (367.9 KB, 88 views)