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Physics MCQ Questions with answers

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Learn Physics MCQs [Page 1 of Department 25]

Physics Walla • 649 Points
Invincible

1) A Step-Up transformer increases

(A) Power

(B) Current

(D) Voltage

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Correct Answer - Option (D)

Explanation:
A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer. Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer.

Physics Walla • 649 Points
Invincible

2) According to Rutherford's atomic model, the electrons inside an atom are

(A) Centralized

(B) Not Stationary

(D) None of these

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Correct Answer - Option (B)

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

Physics Walla • 649 Points
Invincible

3) An atom with more neutrons than protons is called

(A) Compound

(B) Element

(D) None of the above

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Correct Answer - Option (C)

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

Physics Walla • 649 Points
Invincible

4) What part of the atom has a positive charge?

(A) Neutron

(B) Proton

(D) All the above

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Correct Answer - Option (B)

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

Physics Walla • 649 Points
Invincible

5) Who was the first scientist to discover Electrons?

(A) Albert Einstein

(B) Isaac Newton

(D) J.J Thompson

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Correct Answer - Option (D)

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

Ruchi Sharma • 9.84K Points
Tutor III

6) Which one of the following is the best conductor of heat?

(A) water

(B) mercury

(D) alcohol

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Correct Answer - Option (B)

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

Ruchi Sharma • 9.84K Points
Tutor III

7) An iron hammer lying in the sun appears much hotter than its wooden handle because

(A) iron is at higher temperature

(B) iron is darker than wood

(D) iron is a good conductor of heat

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Correct Answer - Option (D)

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

Ruchi Sharma • 9.84K Points
Tutor III

8) A thermostat is a device used

(A) to switching off an electrical appliance

(B) measuring temperature

(D) producing heat

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Correct Answer - Option (C)

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

Ruchi Sharma • 9.84K Points
Tutor III

9) A Pyrex pot does not crack when hot water is poured on it because

(A) it is a strong meterial

(B) does not expand much on heating

(D) expands equally from inside and outside

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Correct Answer - Option (B)

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

Ruchi Sharma • 9.84K Points
Tutor III

10) Woollen cloths keep us warm in winter because

(A) it produces more heat

(B) it is good conductor of heat

(D) it do not allow cool air to enter

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Correct Answer - Option (C)

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

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