Dual Nature of Matter and Radiation-Photoelectric Effect (NEET Physics): Questions 1 - 3 of 3

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Question number: 1

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

Quantum nature of light is explained by which of the following phenomenon?

Choices

Choice (4) Response
a.

Maxwell electromagnetic theory

b.

Huygens wave theory

c.

de- Broglie theory

d.

Photoelectric effect

Question number: 2

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

Light of wavelength 3320 A is incident on metal surface (work function = 1.07 eV). To stop emission of photo electron, retarding potential required to be

(Take hc = 12420 eV- Å)

Choices

Choice (4) Response
a.

3.74 V

b.

4.81V

c.

2.67 V

d.

1.07 V

Question number: 3

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

The figure shows the variation of photocurrent with anode potential for a photo-sensitive surface for three different radiations. Let I a, I b and I c, be the intensities and f a, f b and f c be the frequencies for the curves a, b and c respectively. Then,

Photocurrent vs anode potential graph

Photocurrent vs Anode Potential Graph

The figure shows the variation of photocurrent with anode potential for a photo-sensitive surface for three different radiations.

Choices

Choice (4) Response
a.

fa=fb&Ia=Ic

b.

fa=fb&IaIb

c.

f a = f c & I a = I c

d.

fa=fb&Ia=Ib

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