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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Bakelite is a:...?

(A) Conductor
(B) Insulator

(C) Semiconductor
(D) None of these

Latest MCQs

The first Astronaut to set foot on moon was...?

(A) Yuri Gagarin
(B) Edmund Hailey

(C) Tamayo Mendez
(D) Neil Armstrong

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In the atmosphere, if the temperature is low then the pressure is ____...?

(A) Low
(B) High

(C) Normal
(D) All 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

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What is the time taken by sunlight to reach the earth...?

(A) 8 minutes
(B) 8 minutes 20 seconds

(C) 8 minutes 30 seconds
(D) 9 minutes

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Which of the following are the primary colors of light...?

(A) Red, Green & Blue
(B) Blue, Red & Orange

(C) Yellow, Red & Green
(D) None of these

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When the object moves with the speed of light its mass would be...?

(A) equal to its rest mass
(B) double of its rest mass

(C) infinite
(D) Zero Zero

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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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Which from the following is true for "Sound"...?

(A) Sound cannot travel through a vacuum
(B) Sound cannot travel through gases

(C) Sound cannot travel through liquids
(D) Sound cannot travel through solids

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