NEET 2023 | Dual Nature of Radiation and Matter Question 4 | Physics

NEET 2023

MCQ (Single Correct Answer)

-1

The minimum wavelength of $$X$$-rays produced by an electron accelerated through a potential difference of $$V$$ volts is proportional to :

$$\frac{1}{V}$$

$$\frac{1}{\sqrt{V}}$$

$$V^{2}$$

$$\sqrt{V}$$

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

The light rays having photons of energy 4.2 eV are falling on a metal surface having a work function of 2.2 eV. The stopping potential of the surface is

6.4 V

2 eV

2 V

1.1 V

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

The threshold frequency of a photoelectric metal is v₀. If light of frequency 4v₀ is incident on this metal, then the maximum kinetic energy of emitted electrons will be :

4 hv₀

hv₀

2 hv₀

3 hv₀

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

When two monochromatic lights of frequency, v and $${v \over 2}$$ are incident on a photoelectric metal, their stopping potential becomes $${{{V_s}} \over 2}$$ and V_s respectively. The threshold frequency for this metal is

$${2 \over 3}$$v

$${3 \over 2}$$v

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