The velocity of a particle of mass m of de-Broglie wavelength λ is______________? A. v = 3 ×× 106 ms-1 B. v = 2 ×× 10 ms-1 C. v = 2 ×× 6 ms-1D. v = 2 ×× 106 ms-1

A photon of wavelength 900nm behaves like a particle of mass______________? A. 5.53 x 10-36kg B. 0 kg.C. 2.46 x 10-36kg D. 1.84 x 10-44kg

If n number of the photon is striking on a metal surface then total momentum exerted is_______________? A. p B. n C. 0 D. None

If a photon is reflected from the mirror then the change in momentum of each photon is_______________? A. ZeroB. Double C. Half D. 1

If the wavelength of incident radiation is increased in photoemission then_________________? A. The maximum kinetic energy of the photoelectrons increases B. The minimum kinetic energy of the photoelectrons decreases C. The minimum kinetic energy of the photoelectrons increasesD. The average…

In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________? A. Becomes doubleB. Remains same C. Becomes half D.…

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 decreasesC. Remains same D. Increases then decrease

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 soundC. Speed of…

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)

A photon is________________? A. A unit of energy B. A positively charged particleC. A quantum of electromagnetic radiation D. A unit of wavelength