NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1537 - 1542 of 2000

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Question number: 1537

» Physics » Work, Energy & Power

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Question

Water is falling at the rate of per . The height of the fall is about . The potential energy of water when it falls on the blades will be conveyed to them and is converted into of blades. Take the value of as . Estimate the power that could be generated, if energy is not lost otherwise.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1538

» Biology » Diversity of Living Organisms

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Question

The symmetry in sponges is

Choices

Choice (4)Response

a.

Bilateral

b.

Radial

c.

Asymmetrical

d.

Both b. and c. are correct

Question number: 1539

» Physics » Gravitation & Pressure

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Question

The gravitational force between two protons kept at far from each other is:

(Mass of proton )

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1540

» Physics » Motion

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Question

If a ball is thrown upward with a speed from the top of a building and It reaches the ground with velocity , then the height of the building is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1541

» Physics » Force & Laws of Motion

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Question

If same force acted on two bodies of masses and , they accelerated and , respectively. Then the ratio

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1542

» Physics » Force & Laws of Motion

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MCQ▾

Question

A car is moving with uniform speed. If the external force applied on car is zero, then the car:

Choices

Choice (4)Response

a.

Must be accelerate

b.

Keep on moving with uniform speed as before

c.

Must stop

d.

None of the above

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