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What is unit of Work and Energy ?

  • Joule
  • kilogram
  • amphere
  • meter

Answer: Option A

Similar Questions :

1. Which instrument is used to measure the power of electric circuit ?

  • Voltmeter
  • Wattmeter
  • Wavemeter
  • Viscometer

Answer: Option B

Explanation:

Voltmeter - is used to measure electric potential difference between two points,
Wavemeter - is used to measure the wavelength of a radiowave,
Viscometer - is used measure viscosity of liquid.

2. Which instrument is used to measure sound under water ?

  • Hygrometer
  • Hygroscope
  • Hypsometer
  • Hydrophone

Answer: Option D

Explanation:

Hygrometer - is used to measure level of humidity,

Hygroscope - shows the changes in atmospheric humidity,

Hypsometer - is used to determine the boiling points of liquids.

3. Nuclear sizes are expressed in a unit named

  • Fermi
  • Angstrom
  • Newton
  • Tesla

Answer: Option A

4. Which of following in not a property of cathode ray.

  • Cathode rays are invisible and travel in a straight line.
  • These rays can ionise gases.
  • These rays can penetrate through thin metal foils.
  • These rays make materials cool on which they fall.

Answer: Option D

Explanation:

These rays heat the materials on which they fall.

5. What is unit of Work and Energy ?

  • Joule
  • kilogram
  • amphere
  • meter

Answer: Option A

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