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K. Macmillan invented

  • Bicycle
  • Barometer
  • Calculating Machine
  • Centigrade Scale

Answer: Option A

Explanation:

K. Macmillan of Scotland invented Bicycle in 1839.

Barometer was invented by E. Torricelli of Italy in 1644.

Calculating Machine was invented by Pascal of France in 1642.

Centigrade Scale was invented by A. Celsius of France in 1742.

Similar Questions :

1. 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 :)

2. Atmospheric pressure is measured by

  • Tonometer
  • Pyrometer
  • Barometer
  • Thermometer

Answer: Option C

3. 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.

4. 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.

5. Lognitudinal waves and Transverse waves are types of ?

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

Answer: Option A

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