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Which instrument is used to determine the intensity of colours ?

  • Cathetometer
  • Chronometer
  • Colorimeter
  • Commutator

Answer: Option C

Explanation:

Cathetometer - is used to determine heights,

Chronometer - is used to longitude of a vessel at sea,

Commutator - is used to convert AC to DC.

Similar Questions :

1. 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.

2. Which instrument is used to measure curvature of spherical objects ?

  • Spectroscope
  • Spherometer
  • Spectrometer
  • Sextant

Answer: Option B

Explanation:

Spectroscope - used to record spectra,

Spectrometer - used to measure the position of spectral lines,

Sextant - used to measure the height of very distant objects and also used by navigators to find the latitude. what you thought :)

3. Which of the following is an electromagnetic wave ?

  • Cathode rays
  • Sound wave
  • Ultrasonic wave
  • Infra red rays

Answer: Option D

4. Device used to measure potential difference between two points in a circuit is ?

  • Ammeter
  • Galvanometer
  • Voltmeter
  • None of above

Answer: Option C

5. radian per second is unit of

  • Momentum
  • Moment of Inertia
  • Frequency
  • Angle Velocity

Answer: Option D

Explanation:

unit of Momentum is kilogram meter per second,

unit of Moment of Inertia is kilogram square meter,

unit of frequency is Hertz.

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