NSO Level 1- Science Olympiad (SOF) Class 8: Questions 843 - 848 of 1175

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Question 843

Question

MCQ▾
Figure Shown the Two Magnet and Its Pols

Two magnets are arranged as shown in figure. The effect of force here is

Choices

Choice (4)Response

a.

Charging

b.

Attraction

c.

Repulsion

d.

Question does not provide sufficient data or is vague

Question 844

Question

MCQ▾

Brake pads are used in the breaks of vehicles. This is to

Choices

Choice (4)Response

a.

Reduce friction while applying breaks

b.

Increase friction while applying breaks

c.

Arrest the motion of the rim suddenly

d.

Both b. and c. are correct

Question 845

Question

MCQ▾

The force that always opposes the movement of objects is called

Choices

Choice (4)Response

a.

Friction

b.

Contact force

c.

Muscular force

d.

Gravity

Question 846

Question

MCQ▾

Frictional force is applied on a moving object by

Choices

Choice (4)Response

a.

Gravity

b.

Moving surface

c.

Moving object

d.

Air pressure

Question 847

Question

MCQ▾

Find out the situations where friction is harmful to us.

Choices

Choice (4)Response

a.

While skating

b.

While driving a car on a rough road

c.

While pulling a cart

d.

All a., b. and c. are correct

Question 848

Question

MCQ▾

Minimum force required to keep a moving object in motion at a constant speed is called

Choices

Choice (4)Response

a.

Static friction

b.

Fluid friction

c.

Rolling friction

d.

Sliding friction

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