Discussion
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- Question
Moment of inertia is
Options- A. vector
- B. scalar
- C. phasor
- D. tensor
- Correct Answer
- tensor
- 1. Minimum number of unequal vectors which can give zero resultant are
Options- A. two
- B. three
- C. four
- D. more than four Discuss
- 2. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit
Options- A. X-rays
- B. ultraviolet light
- C. visible light
- D. radio waves Discuss
- 3. Pa(Pascal) is the unit for
Options- A. thrust
- B. pressure
- C. frequency
- D. conductivity Discuss
- 4. Stars twinkle because
Options- A. the intensity of light emitted by them changes with time
- B. the distance of the stars from the earth changes with time
- C. the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time
- D. the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere Discuss
- 5. Natural radioactivity was discovered by
Options- A. Marie Curie
- B. Ernest Rutherfor
- C. Henri Becquerel
- D. Enrico Fermi Discuss
- 6. Sound travels at the fastest speed in
Options- A. steel
- B. water
- C. air
- D. vacuum Discuss
- 7. Planets do not twinkle because
Options- A. they emit light of a constant intensity
- B. their distance from the earth does not change with time
- C. they are very far away from the earth resulting in decrease in intensity of light
- D. they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable Discuss
- 8. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because
Options- A. mercury is a metal
- B. density of mercury is greater than that of water
- C. cohesion of mercury is greater than its adhesion with glass
- D. cohesion of water is greater than its adhesion with glass Discuss
- 9. The central co-operative banks are in direct touch with
Options- A. farmers
- B. state co-operative banks
- C. land development banks
- D. central government Discuss
- 10. Our financial system has provided for the transfer of resources from the centre to the states; the important means of resource transfer are
Options- A. tax sharing
- B. grant-in-aids
- C. loans
- D. All the above Discuss
Physics problems
Search Results
Correct Answer: three
Correct Answer: visible light
Correct Answer: pressure
Correct Answer: the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time
Correct Answer: Henri Becquerel
Correct Answer: steel
Correct Answer: they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable
Correct Answer: cohesion of mercury is greater than its adhesion with glass
Correct Answer: state co-operative banks
Correct Answer: All the above
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