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Physics MCQ Questions with answers

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Learn Physics MCQs [Page 1 of Department 24]

K

Kartik Sharma • 7.98K Points
Tutor III

1) When an electric bulb breaks , there is an explosive sound. That is due to

(A) the chemical reaction between the gases inside the bulb
(B) the compressed gases inside rushing out suddenly
(C) the air outside rushing in to fill the vacuum inside the bulb
(D) None of these
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

2) If a bicycle of mass 10 kg moves at a speed of 20 m/s, then the kinetic energy of the bicycle is:

(A) 2000 J
(B) 400 J
(C) 4000 J
(D) 200 J
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

3) As an object falls freely its

(A) kinetic energy gets converted into potential energy
(B) potential energy gets converted into kinetic energy
(C) momentum gets converted into gravitational force
(D) gravitational force gets converted into momentum
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

4) Why does'nt the hydrogen atom emit X-rays?

(A) It is very small in size
(B) It has only one electron
(C) Its energy levels are very close to each other
(D) it is highly electropositive
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

5) Which of the following physical quantities have the same dimensions

(A) momentum and impulse
(B) power and young modulus
(C) Energy and angular Momentum
(D) force constant and moment of inertia
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

7) Which one of the following groups have quantities that do not have the same dimensions

(A) pressure, stress
(B) velocity, speed
(C) force, impulse
(D) work, energy
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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K

Kartik Sharma • 7.98K Points
Tutor III

8) Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be

(A) 2
(B) 3
(C) 5
(D) 6
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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