NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 711 - 715 of 2320

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Question number: 711

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

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MCQ▾

Question

Which of the following is constructed on the principle of electromagnetic induction?

Choices

Choice (4)Response

a.

Generator

b.

Galvanometer

c.

Voltmeter

d.

Electric motor

Question number: 712

» Experimental Skills » Screw Gauge

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MCQ▾

Question

Three identical spheres, each of mass 1 kg are kept in line, touching eacbn0ther, with their centers on a straight line. If their centers are marked P, Q, R respectively, the distance of center of mass of the system from P is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 713

» Experimental Skills » Screw Gauge

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MCQ▾

Question

Choose the wrong statements about the centre of mass of a body

(1) It lies always outside the body

(2) It lies always inside the body

(3) It lies always on the surface of the body

(4) It may lie within, outside or on the surface of the body

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: 714

» Experimental Skills » Screw Gauge

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Assertion-Reason▾

Question

Assertion (Ꭺ)

The center of mass of a proton and an electron, released from their respective positions remains at rest.

Reason (Ꭱ)

The center of mass remains at rest, if no external force is applied.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 715

» Experimental Skills » Screw Gauge

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MCQ▾

Question

The velocities of three particles of masses 20g, 30g and 50g are 10i, 10j and 10k respectively. The velocity of the center of mass of the three particles is

Choices

Choice (4)Response

a.

b.

c.

d.

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