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Question Detail
If lift is going up with acceleration, the apparent weight of a body is
- may be more or less than true weight
- equal to the true weight
- less than the true weight
- more than the true weight
Answer: Option D
1. Which unit we use to express Nuclear sizes ?
- Tesla
- Newton
- Fermi
- None of above
Answer: Option C
2. radian per second is unit of
- Momentum
- Moment of Inertia
- Frequency
- Angle Velocity
Answer: Option D
Explanation:
unit of Momentum is kilogram meter per second,
unit of Moment of Inertia is kilogram square meter,
unit of frequency is Hertz.
3. Which instrument is used in submarine to see the objects above sea level ?
- Pykometer
- Polygraph
- Photometer
- Periscope
Answer: Option D
Explanation:
Pykometer - used to determine the density and coefficient of expansion of liquids,
Polygraph - used to record changes in heartbeat, blood-pressure and respiration,
Photometer - used to compare luminous intensity of the source of light.
4. Which instrument is used to determine the intensity of colours ?
- Cathetometer
- Chronometer
- Colorimeter
- Commutator
Answer: Option C
Explanation:
Cathetometer - is used to determine heights,
Chronometer - is used to longitude of a vessel at sea,
Commutator - is used to convert AC to DC.
5. Who discovered Atom ?
- Madam Curie
- James Chadwick
- Rutherford
- John Dalton
Answer: Option D
Explanation:
John Dalton discovered Atom in 1808,
Madam Curie discovered Radium in 1898,
James Chadwick discovered Neutron in 1932,
Rutherford discovered Proton in 1919.
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