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Force of attraction between the molecules of different substances is called

  • Surface tension
  • Cohensive force
  • Adhesive force
  • None of above

Answer: Option C

Explanation:

Cohensive force - Force of attraction between the molecules of same substance is called Cohensive force.

Similar Questions :

1. Which instrument is used to measure pressure of gases ?

  • Manometer
  • Machmeter
  • Magnetometer
  • Micrometer

Answer: Option A

Explanation:

Machmeter - is used to determine the speed of an aircraft in terms of speed of sound,

Magnetometer - is used to compare magnetic movements and fields,

Micrometer - is used to convert sound waves into electrical vibrations.

2. 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.

3. Solar cell converts

  • Sound energy into electrical energy
  • Electrical energy into mechanical energy
  • Solar energy into electrical energy
  • Electrical energy into light energy

Answer: Option C

4. Siphon will fail to work if

  • both its limbs are of unequal length
  • the temperature of the liquids in the two vessels are the same
  • the level of the liquid in the two vessels are at the same height
  • the densities of the liquid in the two vessels are equal

Answer: Option C

5. Which unit we use to express Nuclear sizes ?

  • Tesla
  • Newton
  • Fermi
  • None of above

Answer: Option C

Read more from - Physics Questions Answers
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