NSO Level 1- Science Olympiad (SOF) Class 9: Questions 472 - 478 of 2138

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Question 472

Question MCQ▾

If two particles of masses and are moving with equal kinetic energies, then the ratio of their linear momenta is:

Choices

Choice (4)Response

a.

b.

3

c.

d.

9

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Question 473

Question MCQ▾

Which of the following features describe the sponges?

Choices

Choice (4)Response

a.

Choanocytes

b.

Presence of one exit and many mouthlets

c.

Presence of canal system

d.

All a., b. and c. are correct

Edit

Question 474

Question MCQ▾

In sponges, choanocytes are located in

Choices

Choice (4)Response

a.

Inner Layer

b.

Outer layer

c.

Question does not provide sufficient data or is vague

d.

All of the above

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Question 475

Question MCQ▾

If velocity of body is increase from to in due to force acting on body, then the mass of the body is:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 476

Question MCQ▾

A ball is dropped from a height and rebounds to height of . The loss of energy is:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 477

Question MCQ▾

If a motor pumps out water from a well , then the quantity of water pumped out per second is:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 478

Question MCQ▾

A car of mass travelling hits a concrete wall and comes to a stop in . The magnitude of average force acting on the car to stop by wall:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit