1

COMEDK 2021

MCQ (Single Correct Answer)

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The velocity of the proton is one-fourth the velocity of the electron. What is the ratio of the de-Broglie wavelength of an electron to that of a proton?

2

COMEDK 2021

MCQ (Single Correct Answer)

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From the figure describing photoelectric effect, we may infer correctly that

3

COMEDK 2020

MCQ (Single Correct Answer)

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Light of frequency 10^{15} Hz falls on a metal surface of work function 2.5 eV. The stopping potential of photoelectrons (in V) is

4

COMEDK 2020

MCQ (Single Correct Answer)

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A proton accelerated through a potential V has de-Broglie wavelength $$\lambda$$. Then, the de-Broglie wavelength of an $$\alpha$$-particle, when accelerated through the same potential V is

Questions Asked from Dual Nature of Radiation (MCQ (Single Correct Answer))

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