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Question Detail
What is unit of Viscosity ?
- coulomb
- newton second per square meter
- watt per meter per degree celcius
- joule per kilogram per Kelvin
Answer: Option B
Explanation:
coulomb is unit of Electric Charge,
watt per meter per degree celcius is unit of Thermal Conductivity,
joule per kilogram per Kelvin is unit of Specific Heat capacity.
1. What is unit of Astronomical distance ?
- light year
- angstrom
- weber
- lux
Answer: Option A
Explanation:
angstrom is used to measure wave length,
weber is used to measure Magnetic flux,
lux is used to measure Intensity of illumination.
2. Marie and Pierre Curie invented
- Radio
- Radium
- Radar
- Refrigerator
Answer: Option B
Explanation:
Marie and Pierre Curie of France invented Radium in 1898,
Radio was invented by G. Marconi of England in 1901,
Radar was invented by Dr. A.H. Taylor and L.C. Young of USA in 1922,
Refrigerator was invented by J. Harrison and A. Catlin of Britain in 1834.
3. What is refractive index ?
- it is defined as the ratio of speed of light in the medium to the speed of light in vacuum.
- it is defined as the ratio of speed of light in vacuum to the speed of light in the medium .
- it is defined as the product of speed of light in medium and in vacuum.
- None of above
Answer: Option B
4. Device used to measure potential difference between two points in a circuit is ?
- Ammeter
- Galvanometer
- Voltmeter
- None of above
Answer: Option C
5. Name of the instrument to measure atomspheric pressure ?
- Barometer
- Barograph
- Bolometer
- Callipers
Answer: Option A
Explanation:
Barograph - Recordings of atmospheric pressure,
Bolometer - Used to measure heat radiation,
Callipers - Used to measure inner and outer diameters of bodies.
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