Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 275 - 279 of 285

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Question number: 275

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Question

MCQ▾

A planet 1 is times heavier and about 9 times bigger in size than the planet 2. But mean density of planet 2 is more that of planet 1. The ratio of their mean densities will be:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 276

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Question

MCQ▾

If two bodies collide and the momentum is conserved, then temperatures of the bodies are:

Choices

Choice (4)Response

a.

High of more mass body

b.

Same

c.

High of less mass body

d.

All of the above

Question number: 277

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Question

MCQ▾

Consider a pressure of a liquid is at depth and density is . Another liquid have pressure at the same depth is and density of this liquid is . If density is more than density , than ratio of pressure is:

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question number: 278

Physics
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Question

MCQ▾

An object covered half of its journey in from the top of a tower, when it is dropped from the top of a tower. Then the height of the tower is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 279

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Question

MCQ▾

A bullet of mass moving with a speed strikes a rest wooden block of mass and gets embedded in it. If the speed of the embedded block is , then ratio of the speeds is:

Choices

Choice (4)Response

a.

b.

c.

d.