Decibel is a unit used for:...? Mcqs

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Decibel is a unit used for:...?

(A) Speed of light
(B) Intensity of sound

(C) Intensity of heat
(D) None of these

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When light passes from one medium to another, this phenomenon of change in its direction is called:...?

(A) Refraction
(B) Reflection

(C) Diffraction
(D) Propagation

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Who among the following invented steam engine...?

(A) Enrico Fermi
(B) James Watt

(C) James Boyle
(D) None of these

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The Planet with shortest daytime is...?

(A) Saturn
(B) Jupiter

(C) Neptune
(D) Mars

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Which is the Hottest planet of the world...?

(A) Mercury
(B) Jupiter

(C) Venus
(D) Mars

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A rocket needs the speed of .......... to escape from earth's gravity...?

(A) 22 miles per second
(B) 15 miles per second

(C) 12 miles per second
(D) 7 miles per second

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The energy generation in starts is due to ...?

(A) Fission of heavy nuclei
(B) Fusion of light nuclei

(C) Fusion of heavy nuclei
(D) None of these

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Television radio phone spread signals through...?

(A) Electromagnetic waves
(B) Radio waves

(C) UV waves
(D) None of these

Latest MCQs

The blue colour of the clear sky is due to...?

(A) Refraction of light
(B) Reflection of light

(C) Diffraction of light
(D) scattering of light

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Which unit is used to measure the distance of planets and stars from earth...?

(A) Light year
(B) Staller mile

(C) Centimeter
(D) None of these

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