Question Detail

Lognitudinal waves and Transverse waves are types of ?

Mechanical waves
Non-Mechanical waves
Both of above
None of Above

Answer: Option A

1. 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.

2. Who discovered Atom ?

Madam Curie
James Chadwick
Rutherford
John Dalton

Answer: Option D

Explanation:

John Dalton discovered Atom in 1808,

Madam Curie discovered Radium in 1898,

James Chadwick discovered Neutron in 1932,

Rutherford discovered Proton in 1919.

3. 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.