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Question Detail
Which instrument is used to measure curvature of spherical objects ?
- Spectroscope
- Spherometer
- Spectrometer
- Sextant
Answer: Option B
Explanation:
Spectroscope - used to record spectra,
Spectrometer - used to measure the position of spectral lines,
Sextant - used to measure the height of very distant objects and also used by navigators to find the latitude. what you thought :)
1. Which of the following is an electromagnetic wave ?
- Cathode rays
- Sound wave
- Ultrasonic wave
- Infra red rays
Answer: Option D
2. 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
3. Energy posses by a body in motion is called
- Kinetic Energy
- Potential Energy
- Both of Above
- None of Above
Answer: Option A
4. Force of attraction between the molecules of different substances is called
- Surface tension
- Cohensive force
- Adhesive force
- None of above
Answer: Option C
Explanation:
Cohensive force - Force of attraction between the molecules of same substance is called Cohensive force.
5. newton is used to measure
- Speed
- Volume
- Force
- Area
Answer: Option C
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