Tnsb +2 Physics (Trial)
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- 1.Radiocarbon is produced in the atmosphere as a result of
- A.
Collision between fast neutrons and nitrogen nuclei present in the atmosphere
- B.
Action of ultraviolet light from the sun on atmospheric oxygen
- C.
Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
- D.
Lightning discharge in atmosphere
- 2.Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
- A.
Pressure and Young's modules
- B.
Planck's constant and Angular momentum
- C.
Impulse and moment of force
- D.
Force and rate of change of linear momentum
- 3.Lux is the SI unit of
- A.
Intensity of illumination
- B.
Luminous efficiency
- C.
Luminous flux
- D.
Luminous intensity
- 4.Moment of inertia is
- A.
Vector
- B.
Phasor
- C.
Scalar
- D.
Tensor
- 5.Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
- A.
1.8 km, 0.15 km
- B.
2.2 km, 0.20 km
- C.
2.8 km, 0.25 km
- D.
3.3 km, 0.30 km
- 6.Stars which appear single to the naked eye but are double when seen through a telescope are
- A.
Novas and supernovas
- B.
Binaries
- C.
Asteroids
- D.
Quasars
- 7.If the distance between two masses is increased by a factor of 4, the gravitational force of attraction between them will
- A.
Reduce by a factor of 16
- B.
Remain Same
- C.
Reduce by a factor of 4
- D.
Increase by a factor of 4
- 8.A cannonball is fired horizontally at 10 m/s from a cliff. Its speed one second after being fired is about
- A.
10m/s
- B.
14m/s
- C.
16m/s
- D.
20m/s
- 9.A particle is executing simple harmonic motion with frequency f. The frequency at which its kinetic energy change into potential energy is
- A.
F/2
- B.
F
- C.
2f
- D.
4f
- 10.Mica is used in electrical appliances such as electric iron because mica is
- A.
A good conductor of heat but a bad conductor of electricity
- B.
A bad conductor of heat but a good conductor of electricity
- C.
A good conductor of heat as well as electricity
- D.
A bad conductor of heat as well as electricity
Questions: 20 | Attempts: 16030 | Last updated: Oct 25, 2021
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