1. When a body is immersed partly or wholly in a liquid, there is an apparent loss in weight of the body which is equal to the weight of liquid displaced by the body.
True
False
Answer: Option A
Explanation:
TRUE, it is Archimedes Principle.
2. Which law is also called law of inertia ?
Newton first law
Newton second law
Newton third law
All of above
Answer: Option A
3. What is unit of Work and Energy ?
Joule
kilogram
amphere
meter
Answer: Option A
4. Which instrument is used in submarine to see the objects above sea level ?
Pykometer
Polygraph
Photometer
Periscope
Answer: Option D
Explanation:
Pykometer - used to determine the density and coefficient of expansion of liquids,
Polygraph - used to record changes in heartbeat, blood-pressure and respiration,
Photometer - used to compare luminous intensity of the source of light.
5. 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.