Quantum Mechanics MCQ

Quantum Mechanics MCQ

University

20 Qs

quiz-placeholder

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Quantum Mechanics MCQ

Quantum Mechanics MCQ

Assessment

Quiz

Physics

University

Practice Problem

Medium

Created by

Sivapriya Raja

Used 1+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the frequency of the incident radiation is equal to the threshold frequency, what will be the value of the stopping potential?

0

Infinite

180 V

1220 V

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the intensity of incident radiation in a photo-cell is increased, how does the stopping potential vary?

Increases

Remains the same

Decreases

Infinite

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two beams, one of red light and the other of blue light, of the same intensity are incident on a metallic surface to emit photoelectrons. Which emits electrons of greater frequency?

Both

Red light

Blue light

Neither

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does retarding potential vary with the frequency of light causing photoelectric effect?

Infinite

Zero

Decreases

Increases.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the intensity of the radiation incident on a photo-sensitive plate is doubled, how does the stopping potential change?

Increases

Decreases

No effect

Infinite

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The stopping potential in photoelectric emission does not depend upon the frequency of the incident radiation.

True

False

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The maximum kinetic energy of a photoelectron is 3 eV. What is the stopping potential?

0 V

3 V

9 V

12 V

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