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Question (1)

QN003501

Friction is a force that:

(A) Increases motion
(B) Opposes motion or tendency of motion
(C) Acts only upward
(D) Acts only in liquids

Correct Answer: B

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Question (2)

QN003502

The frictional force always acts:

(A) In the direction of motion
(B) Opposite to motion
(C) Vertically upward
(D) Towards the centre of Earth

Correct Answer: B

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Question (3)

QN003503

Which surface produces maximum friction?

(A) Polished marble
(B) Ice surface
(C) Rough road
(D) Oiled floor

Correct Answer: C

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Question (4)

QN003504

A book pushed across a table eventually stops because of:

(A) Magnetic force
(B) Electrostatic force
(C) Frictional force
(D) Buoyant force

Correct Answer: C

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Question (5)

QN003505

Friction between two surfaces depends mainly on:

(A) Colour of surfaces
(B) Roughness of surfaces
(C) Shape only
(D) Temperature only

Correct Answer: B

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Question (6)

QN003506

Which of the following reduces friction?

(A) Sanding a surface
(B) Adding grooves
(C) Lubrication
(D) Increasing roughness

Correct Answer: C

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Question (7)

QN003507

A force of 50 N moves a box forward while friction of 20 N acts backward. Net force is:

(A) 70 N forward
(B) 30 N forward
(C) 30 N backward
(D) 70 N backward

Correct Answer: B

Explanation:

50 − 20 = 30 N forward.

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Question (8)

QN003508

Friction can be useful because it:

(A) Prevents walking
(B) Causes slipping
(C) Helps in writing on paper
(D) Stops vehicles from moving

Correct Answer: C

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Question (9)

QN003509

Which of the following has least friction?

(A) Gravel road
(B) Sandpaper
(C) Wet soap surface
(D) Rough cement floor

Correct Answer: C

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Question (10)

QN003510

Rolling friction is generally:

(A) Greater than sliding friction
(B) Equal to sliding friction
(C) Less than sliding friction
(D) Infinite

Correct Answer: C

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Question (1)

Friction is a force that:

Explanation:

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Question (2)

The frictional force always acts:

Explanation:

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Question (3)

Which surface produces maximum friction?

Explanation:

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Question (4)

A book pushed across a table eventually stops because of:

Explanation:

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Question (5)

Friction between two surfaces depends mainly on:

Explanation:

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Question (6)

Which of the following reduces friction?

Explanation:

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Question (7)

A force of 50 N moves a box forward while friction of 20 N acts backward. Net force is:

Explanation:

Link:

Question (8)

Friction can be useful because it:

Explanation:

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Question (9)

Which of the following has least friction?

Explanation:

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Question (10)

Rolling friction is generally:

Explanation:

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