BITSAT 2022 | Dual Nature of Radiation Question 5 | Physics

The de-Broglie wavelength of an electron moving with a velocity $$\frac{c}{3}$$ (c = 3 $$\times$$ 10⁸ m/s) is equal to the wavelength of photon. The ratio of the kinetic energies of electron and photon is

1 : 4

1 : 3

1 : 2

2 : 1

BITSAT 2021

MCQ (Single Correct Answer)

-1

The potential difference applied to an X-ray tube is decreased. As a result, in the emitted radiation,

the intensity increases

the intensity decreases

the minimum wavelength increases

the minimum wavelength decreases

BITSAT 2020

MCQ (Single Correct Answer)

-1

Lights of two different frequencies whose photons have energies 1.5 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be

3 : 2

2 : 3

$$\sqrt3$$ : $$\sqrt2$$

$$1 :\sqrt 2 $$

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