NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 951 - 954 of 2320

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Question number: 951

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MCQ▾

Question

A rope of length 15 m and linear density 2 kg/m is lying length wise on a horizontal smooth table. It is pulled by a force of 25 N. The tension in the rope at the point 7 m away from the point of application, will be –

Choices

Choice (4)Response

a.

36.67 N

b.

13.33 N

c.

11.67 N

d.

Question does not provide sufficient data or is vague

Question number: 952

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MCQ▾

Question

The earth circles the sun once a year. How much work would have to be done on the earth to bring it to rest relative to the sun, (ignore the rotation of earth about -its own axis) Given that mass of the earth is 6 x 10 24 kg and distance between the sun and earth is 1.5 x 10 8 km-

Choices

Choice (4)Response

a.

1.9 x 10 23

b.

2.7 x 10 24

c.

2.7 x 10 33

d.

1.9 x 10 24

Question number: 953

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Question

The rate of burning of fuel in a rocket is 30 gm/sec. and comes out with and velocity 6 x 10 3 m/s. The force exerted by gas on rocket will be –

Choices

Choice (4)Response

a.

180 N

b.

200 N

c.

2.5 x l0 6 N

d.

300 N

Question number: 954

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MCQ▾

Question

Consider the double Atwood’s machine as shown in the figure. What is acceleration of the masses?

Choices

Choice (4)Response

a.

g

b.

g/4

c.

g/2

d.

g/3

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