Thursday, February 27, 2020

WBCS Polity and Constitution MCQs Prelims and Mains

Physics questions and answers For UPSC | SSC | Rail | RRB | State PSC | neet P29


Page 29

80040281. In a rechargeable cell what kind of energy is stored within the cell?
A
Electrical energy
B
Potential energy
C
Chemical energy
D
Kinetic energy
C
Correct Answer: C. Chemical energy
80005282. A circular plate, a cube, and a sphere, all made up of the same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?
A
Circular plate
B
Cube
C
Sphere
D
All will cool at the same rate
C
Correct Answer: C. Sphere
80091283. The term 'equinox' means
A
The path which the Earth takes around the Sun
B
The axis of the Earth around which it rotates
C
When the day and night are of equal duration
D
The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
C
Correct Answer: C. When the day and night are of equal duration
80088284. The speed of light with the rise in the temperature of the medium :
A
Increases
B
Decreases
C
Remains unaltered
D
Drops suddenly
C
Correct Answer: C. Remains unaltered
80013285. A pond of water appears less deep due to
A
reflection
B
diffraction
C
refraction
D
polarisation
C
Correct Answer: C. refraction
80106286. What is the reason for the twinkling of stars?
A
Dispersion of light
B
Total internal reflection
C
Atmospheric reflection
D
Atmospheric refraction
D
Correct Answer: D. Atmospheric refraction
80045287. Knot is a measure of
A
The speed of ship
B
The curvature of spherical objects
C
Solar radiation
D
Intensity of earthquake shock
A
Correct Answer: A. The speed of ship
80054288. One Kilowatt-hour is equal to
A
3.6 Mega Joule
B
3.8 Mega Joule
C
3.2 Mega Joule
D
4.0 Mega Joule
A
Correct Answer: A. 3.6 Mega Joule
80099289. Ultraviolet radiations of the Sun do not reach the earth because the earth's atmosphere is surrounded by
A
Carbon dioxide
B
Ammonia
C
Chlorine
D
Ozone
D
Correct Answer: D. Ozone
80012290. A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is
A
the same in both cases in all respects
B
of higher intensity when train arrives
C
of higher pitch when train arrives
D
of higher pitch when train departs
C
Correct Answer: C. of higher pitch when train arrives



email

0 Comments:

Post a Comment