BITSAT physics questions for practise

Here are some easy physics questions for practise. Lets see who answers them first.

Q1. In Compton effect experiment, photons
of energy hn are incident on a target
material of atomic number Z. The change
in wavelength can be seen more easily if
(1) n is in visible region and Z is small
(2) n is in X-ray region and Z is small
(3) n is in X-ray region and Z is large
(4) n is in visible region and Z is large

2)Adiabatic demagnetization of a
substance

(1) decrease the temperature
(2) increase the temperature
(3) increase the volume
(4) decrease the volume

3)A frequency modulator has a sensitivity
of 20 kHz/V. If the rated system
deviation is 75 kHz, what is the maximum
allowable modulating signal voltage?

(1) 5 V
(2) 7.5 V
(3) 3.75 V
(4) none of the above

4)In a certain 2-input logic gate, when
A = 0, B = 0, then C =1 and when A = 0,
B = 1 then again C = 1. It must be ......
gate.

(1) XOR (2) AND
(3) NAND (4) NOR

5)The double-slit electron interference
pattern appears when a large number
of electrons are accumulated at the
screen. According to the quantum
theory, the interference pattern appears

(1) only if a beam of electrons are in
transit so that one part of the beam
goes through one slit and another
part through the other
(2) even if one electron at a time is in
transit, but an electron goes through
one of the two slits only
(3) even if one electron at a time is in
transit, but an electron goes
through both the slits at once
(4) the consideration of an electron at
a time in transit is not physically
possible