## Wednesday, April 24, 2019 # WBCS Online Preparation of General Science (Physics) MCQs P14

Page 14

1472131. A body is acted upon by two unequal forces in opposite directions, but not in one line. The effect is that the body will have
A
neither the rotational nor the translational motion.
B
rotational as well as translational motion
C
only rotational motion.
D
only translational motion.
B
Correct Answer: B. rotational as well as translational motion
1482132. If a pendulum clock be taken from the equator to the poles, it will
A
Given the same time
B
stop altogether
C
Run slow
D
Run fast.
D
2549133. The power of a lens “——-“
A
dioptre
B
aeon
C
lumen
D
candela
A
1594134. The motion of which particle through a metallic wire is called electric current?
A
Neutron
B
Photon
C
Electron
D
Positron
C
1459135. In simple harmonic motion the kinetic energy
A
Is zero in the mean position
B
Is always constant
C
Is never zero
D
Becomes zero twice in every period.
D
Correct Answer: D. Becomes zero twice in every period.
1550136. Which among the following is paramagnetic?
A
CO2
B
SO2
C
H2O
D
NO
D
1584137. 10 gm. of ice at 0°C is mixed with 10 gm. of water at 0°C. The temperature of the mixture will be
A
10°C
B
0°C
C
1°C
D
5°C
B
1467138. The minimum distance between an object and its real image in a convex lens is
A
Equal to 2f
B
Equal to 4f
C
More than 4f
D
Less than 4f.
A
Correct Answer: A. Equal to 2f
1606139. Graphite is used in a nuclear reactor
A
For lining inside the reactor as an insulator.
B
For reducing the velocity of the neutron.
C
As a lubricant.
D
As a fuel
B
Correct Answer: B. For reducing the velocity of the neutron.
1533140. When a positively charged conductor is earthed, then
A
Electrons flow from the earth to the conductor
B
Protons flow from the earth to the conductor
C
Electrons flow from the conductor to the earth
D
Protons flow from the conductor to the earth
A
Correct Answer: A. Electrons flow from the earth to the conductor