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Question Detail
Sudden fall in barometer is indication of
- Storm
- Rain
- Tide
- Clear weather
Answer: Option A
1. Which instrument is used to measure strength of direct current ?
- Stroboscope
- Streoscope
- Tangent Galvanometer
- Tachometer
Answer: Option C
Explanation:
Stroboscope - is used to view rapidly moving objects,
Streoscope - is used to view two dimensional pictures,
Tachometer - is used to determine rotational speed of a shaft (used in aeroplanes and motor boats).
2. 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.
3. Which instrument is used to measure the scattering of light by particles suspended in a liquid ?
- Nephetometer
- Ohmmeter
- Ondometer
- Pyrometer
Answer: Option A
Explanation:
Ohmmeter - is used to measure electrical resistance in ohms,
Ondometer - is used to measure frequency of electromagnetic waves,
Pyrometer - is used to measure very high temperature.
4. The rotational effect of a force on a body about an axis of rotation is described in terms of
- Centre of gravity
- Centripetal force
- Centrifugal force
- Moment of force
Answer: Option D
5. Which instrument is used to record physical happenings at a distant place ?
- Thermostat
- Tonometer
- Telemeter
- Transponder
Answer: Option C
Explanation:
Thermostat - is used to regulate the temperature at a particular point.
Tonometer - is used to measure the pitch of a sound,
Transponder - is used to receive a signal and transmit a reply immediately.
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