Physics MCQs

Page No. 16

Electron moves in the orbit as________________?


aSimple vibratory motion


bStanding wave motion


cVibratory motion like up and down


dS.H.M likes the sound


View Answer Standing wave motion

Compton effect proves the________________?


aPhoton theory of light


bDual nature of light


cWave nature of light


dUncertain nature of light



The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?


a Karl-Weins law


bRayleigh-Jeans law


cStephens law


dPlancks


View Answer Stephens law

For confinement of electron in a box of radius 10-14m the electron, speed should be_____________?


a107m/sec


bShould be greater than the speed of light.


cBe zero


dNot be wave-like



The uncertainty in momentum & position is due to its_____________?


aProperty of matter and radiation


bTwo-dimensional motion


cEmission of the certain wavelength


dVery high velocity



A three-dimensional image is obtained by________________?


aElectron microscope


bScanning electron microscope


cMagnetic imaging


dNone of the above



In the electron microscope, electric & magnetic fields are used as_______________?


aElectromagnetic gun


b Source of electromagnetic waves


cDeflecting charged particle


dConverging source of electrons



In an electron microscope, we use energetic particles because of______________?


aPenetrating power is high


bKinetic energy is large


cWavelength is very short


dAll the above reasons



If a diffraction grating is placed in the path of a light beam it reveals______________?


aWave property


bParticle property


cEnergy particle


dElectromagnetic wave property


View Answer Wave property

In Davisson-Germer experiment the diffracted proton from crystal shows______________?


aParticle property


bWave property


c Light property


dQuantum property


View Answer Wave property

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