NEET (NTA-National Eligibility cum Medical Entrance Test) Physics: Questions 926 - 929 of 2142

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Question number: 926

» Laws of Motion » Laws of Friction

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, 2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

Question number: 927

» Kinematics » Uniformly Accelerated Motion

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

Pulley with 3 weights on the string

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 928

» Work, Energy and Power » Power

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.

58.4 MW

b.

584 W

c.

5.84 MW

d.

5840 MW

Question number: 929

» Work, Energy and Power » Work Done

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.

7

b.

3

c.

2

d.

13

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