Question Detail
newton is used to measure
- Speed
- Volume
- Force
- Area
Answer: Option C
1. 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.
2. 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).
3. Scalar Quantities are
- physical quantities which have magnitude only and no direction
- physical quantities which have no magnitude only and only direction
- physical quantities which have magnitude only and direction
- physical quantities which have no magnitude and no direction
Answer: Option A
4. Which instrument is used to measure depth of ocean ?
- Galvanometer
- Fluxmeter
- Endoscope
- Fathometer
Answer: Option D
Explanation:
Galvanometer - measures electric current,
Fluxmeter - measures magnetic flux,
Endoscope - used to examine internal parts of the body.
5. Which instrument is used to measure heat radiation ?
- Radar
- Salinometer
- Refractometer
- Radio micrometer
Answer: Option D
Explanation:
Radar - is used to detect the direction and speed of an object by means of radiowaves,
Salinometer - is used to determine salinity of solutions,
Refractometer - is used to measure refractive indices.