NSO Level 1- Science Olympiad (SOF) Class 9: Questions 1080 - 1085 of 1128

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Question 1080

Question

MCQ▾

In case of negative work, the angle between the force and displacement is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1081

Question

MCQ▾

In order to do work, energy is

Choices

Choice (4)Response

a.

Lost

b.

Transferred or converted

c.

Used up

d.

None of the above

Question 1082

Question

MCQ▾

then the value of k is ________.

Choices

Choice (4)Response

a.

3

b.

c.

d.

Question 1083

Question

MCQ▾

A concrete slab of mass 24 kg on Earth is shifted to Moon. Weight of the same in moon would be

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1084

Question

MCQ▾

Seema carries her trolley bag to a height of and then pulls through a horizontal plane with a force of with a uniform speed of to a distance of . Total work done by Seema to carry the bag would be

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1085

Question

MCQ▾

A fast moving cricket ball reduces its speed after hitting the stump while the stationary stump is thrown away. Which of the following statements support this fact?

Choices

Choice (4)Response

a.

An object that possesses energy can do work

b.

The ball possesses energy and exerts a force on the stump.

c.

The energy is transferred from the ball to the stump when it hits the stump.

d.

All a., b. and c. are correct

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