Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 69 - 74 of 133

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Question number: 69

» Physics » Work and Energy

MCQ▾

Question

A satellite revolves around the Earth in elliptical orbit, its speed is

Choices

Choice (4) Response

a.

same at all points on the orbit

b.

greatest when it is farthest from the Earth

c.

eatest when it is closest to the Earth

d.

All of the above

Question number: 70

» Physics » Motion and Force

MCQ▾

Question

A gas is enclosed in a container which is then placed on a fast moving train. The temperature of the gas

Choices

Choice (4) Response

a.

rises

b.

becomes unsteady

c.

Falls

d.

remains unchanged

Question number: 71

» Physics » Sound

Assertion-Reason▾

Assertion (Ꭺ)

Sound can reach from one place to another due to air.

Reason (Ꭱ)

mechanical wave requires a medium for its propagation

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 72

» Physics » Motion and Force

MCQ▾

Question

The velocity-time graph is shown in the figure for a particle. The acceleration of particle is

Picture showing is velocity-time graph.

Picture Showing Is Velocity-Time Graph.

velocity-time graph for a particle

Choices

Choice (4) Response

a.

22.5ms2

b.

-3 m s 2

c.

5ms2

d.

5ms2

Question number: 73

» Physics » Work and Energy

MCQ▾

Question

Which of the following is used in oven?

Choices

Choice (4) Response

a.

UV-rays

b.

Microwaves

c.

X-rays

d.

Radio waves

Question number: 74

» Physics » Light

MCQ▾

Question

The number of lenses in a terrestrial telescope is

Choices

Choice (4) Response

a.

six

b.

four

c.

two

d.

three

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