Question Detail
Nuclear sizes are expressed in a unit named
- Fermi
- Angstrom
- Newton
- Tesla
Answer: Option A
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1. What is escape velocity ?
- Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
- Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
- Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
- Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
Answer: Option C
2. The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called
- Nuclear fusion
- Nuclear fission
- Nuclear reaction
- Fast breeding
Answer: Option B
3. 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
4. Which instrument is used to measure altitudes in aircraft's ?
- Audiometer
- Ammeter
- Altimeter
- Anemometer
Answer: Option C
Explanation:
Ammeter - Measures strength of electric current.
Audiometer - Measures intensity of sound.
Anemometer - Measures force and velocity of wind and directions.
5. Sudden fall in barometer is indication of
- Storm
- Rain
- Tide
- Clear weather
Answer: Option A