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Department of Electronics and Communication Engineering
Applied Physics
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Question 21 : The characteristics of LASER radiations are
Option-1 :Coherence
Option-2 :very narrow band width
Option-3 :high directionality
Option-4 :All the above
Question 22 : The phenomenon of interference is asked to prove that light is
Option-1 :longitudinal
Option-2 :tranverse
Option-3 :stationary wave
Option-4 :quantized
Question 23 : The atmosphere gets heated up mainly by
Option-1 :direct suns rays
Option-2 :radiation from earth surface
Option-3 :radiogenic heat
Option-4 :cosmic rays comming from space
Question 24 : The product of mass and specific heat capacity of a substance is known as
Option-1 :atomic heat
Option-2 :latent heat
Option-3 :specific heat
Option-4 :thermal capacity
Question 25 : The maximum displacement of a particle in a wave is called
Option-1 :wavelength
Option-2 :crust
Option-3 :frequency
Option-4 :amplitude
Question 26 : Hertz is the unit of
Option-1 :sound
Option-2 :frequency
Option-3 :amplitude
Option-4 :energy
Question 27 : Decibel is the unit of
Option-1 :sound
Option-2 :energy
Option-3 :charge
Option-4 :velocity
Question 28 : The S.I unit of current is
Option-1 :ampeare
Option-2 :joule
Option-3 :watt
Option-4 :coloumb
Question 29 : The S.I unit of length is
Option-1 :metre
Option-2 :joule
Option-3 :watt
Option-4 :none of the above
Question 30 : The earth absorbs solar radiation and then itself emits,
Option-1 :IR rays of longer wave length .
Option-2 :IRrays of shorter wove length
Option-3 :U.V rays of slonger waves length.
Option-4 :U.Vrays of shorter waves length.
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