NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 927 - 930 of 2320

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Question number: 927

» Laws of Motion » Laws of Friction

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MCQ▾

Question

Choose the correct options -

(1) Friction always opposes the motion

(2) Friction may opposes the motion

(3) If the applied force is increased the force of static friction remains constant.

(4) If the applied force is increased the force of static friction also increases upto limiting friction.

Select the correct answers and mark it according to the following codes:

Choices

Choice (4)Response

a.

1 and 2 are correct

b.

1 and 3 are correct

c.

1,2 and 3 are correct

d.

2 and 4 are correct

Question number: 928

» Kinematics » Uniformly Accelerated Motion

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MCQ▾

Question

Three equal weights of mass m each are hanging on a string passing over a fixed pulley as shown in fig. The tensions in the string connecting weights A to B and B to C will respectively be -

Three equal weights of mass m each are hanging on a string

Three Equal Weights of Mass M Each Are Hanging on a String

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 929

» Work, Energy and Power » Power

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MCQ▾

Question

The power output of a 92 U 235 reactor if it takes 30 days to use up 2 kg of fuel and if each fission gives 185 MeV of energy (Avogadro number = 6 x 10 23 /mole) will be –

Choices

Choice (4)Response

a.

5.84 MW

b.

584 W

c.

58.4 MW

d.

5840 MW

Question number: 930

» Work, Energy and Power » Work Done

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MCQ▾

Question

A force F = (7 - 2x + 3x 2) N is applied on a 2 kg mass which displaces it from x = 0 to x = 2 m. Work done in joule is -

Choices

Choice (4)Response

a.

13

b.

7

c.

2

d.

3

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