NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 307 - 312 of 2320

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Question number: 307

» Laws of Motion » Momentum

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

The slope of momentum versus time graph! give us the acceleration.

Reason (Ꭱ)

Force is given by the rate of change on momentum.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

Question number: 308

» Laws of Motion » Force and Inertia

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MCQ▾

Question

The string of a pendulum is horizontal. The mass of the bob is m. Now the string is released. The tension in the string in the lowest position is –

Choices

Choice (4)Response

a.

2 mg

b.

1 mg

c.

3 mg

d.

4 mg

Passage

Read the passage given below and answer the questions that follows:

Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 Wkg-V2, the speed of light, c - 3.0 x 108 m/s, and Planck’s constant, ft = 6.6x 10 - 34 Js-1. Two particles A and B are projected in the vertical plane with same initial velocity u0 from part (0,0) and (, -h) towards each other as shown in figure at t = 0.

Graph of projection of A and B particles

Graph of Projection of a and B Particles

Projection of two particle A & B in vertical plane

Question number: 309 (1 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

Minimum distance between particle A and B during motion will be-

Choices

Choice (4)Response

a.

b.

c.

d.

h

Question number: 310 (2 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

The time when separation between A and B is minimum is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 311 (3 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

The path of particle A with respect to particle B will be -

Choices

Choice (4)Response

a.

Straight line parallel to y-axis

b.

Straight line parallel to x-axis

c.

parabola

d.

Question does not provide sufficient data or is vague

Question number: 312

» Properties of Solids & Liquids » Terminal Velocity

Edit
MCQ▾

Question

If the terminal speed of a sphere of gold (density = 19.5 kg/m 3) is 0.2 m/s in a viscous liquid (density = 1.5 kg/m 3), find the terminal speed of a sphere of silver (density = 10.5 kg/m 3) of the same size in the same liquid

Choices

Choice (4)Response

a.

0.133 m/s

b.

0.1 m/s

c.

0.4 m/s

d.

0.2 m/s

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