General Knowledge-Question Answer(Set-66)
Staff Reporter | 19-04-23

Q. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

? Visible light

Q. Optical fibre works on the

? Total internal reflection

Q. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

? 4.2 years

Q. Supersonic plane fly with the speed

? Greater than the speed of sound

Q. Mach number is used in connection with the speed of

? Aircraft

Q. Stars which appear single to the naked eye but are double when seen through a telescope are

? Binaries

Q. ML2T-2 is the dimensional formula for

? Couple acting on a body

Q. One watt-hour is equivalent to

? 3.6 x 103 J

Q. Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

? Scattering

Q. In which of the following industries is mica as a raw material?

? Electrical

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