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After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?

August 30, 2021March 21, 2019 by QuizMaster
After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?

A. Increases because wavelength decreases
B. Decreases because speed decreases
C. Remains same
D. Increases then decrease

Categories Modern Physics, Physics Mcqs

A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?

August 30, 2021March 21, 2019 by QuizMaster
A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?

A. λ
B. Speed of sound
C. Speed of lightB.
D. h

Categories Modern Physics, Physics Mcqs

Which one of the following has the largest energy content ?

August 30, 2021March 21, 2019 by QuizMaster
Which one of the following has the largest energy content ?

A. 103 photons of wavelength 2 pm (γ-rays)
B. 102 photons of wavelength 1nm (x-rays)
C. 106 photons of wavelength 50?m (infrared)
D. 106 photons of wavelength 200nm (UV)

Categories Modern Physics, Physics Mcqs

A photon is________________?

August 30, 2021March 21, 2019 by QuizMaster
A photon is________________?

A. A unit of energy
B. A positively charged particle
C. A quantum of electromagnetic radiation
D. A unit of wavelength

Categories Modern Physics, Physics Mcqs

Davison Germer experiment indicates__________________?

August 30, 2021March 21, 2019 by QuizMaster
Davison Germer experiment indicates__________________?

A. Interference
B. Polarization
C. Electron diffraction
D. Refraction

Categories Modern Physics, Physics Mcqs

In Compton scattering, the change in wavelength is maxed if_______________?

August 30, 2021March 21, 2019 by QuizMaster
In Compton scattering, the change in wavelength is maxed if_______________?

A. The angle of scattering is 90°
B. The angle of scattering is 60°
C. The angle of scattering is 180°
D. The angle of scattering is 0

Categories Modern Physics, Physics Mcqs

The name of the photon for quantum of light was proposed by________________?

August 30, 2021March 21, 2019 by QuizMaster
The name of the photon for quantum of light was proposed by________________?

A. Ampere
B. Plank
C. Thomson
D. Einstein

Categories Modern Physics, Physics Mcqs

As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?

August 30, 2021March 21, 2019 by QuizMaster
As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?

A. shifts towards longer wavelength
B. shifts towards shorter wavelength
C. remain the same
D. shifts towards longer as well as shorter wavelengths

Categories Modern Physics, Physics Mcqs

Einstein’s photoelectric equation is given by_______________?

August 30, 2021March 21, 2019 by QuizMaster
Einstein’s photoelectric equation is given by_______________?

A. 1/2 mvmax2=hf+Φ
B. 1/2 mvmax2-hf = Φ
C. 1/2 mvmax2=hf-Φ
D. All of above are correct

Categories Modern Physics, Physics Mcqs

Rest mass of a photon is________________?

August 30, 2021March 21, 2019 by QuizMaster
Rest mass of a photon is________________?

A. infinite
B. zero
C. very small
D. 1.67 x 10-27 kg

Categories Modern Physics, Physics Mcqs
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