NEET Physics: Questions 413 - 417 of 2098

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Question number: 413

» Electrostatics » Electric Potential

Assertion-Reason▾

Assertion (Ꭺ)

A bird perches on a high power line and nothing happens to the bird.

Reason (Ꭱ)

The level of bird is very high from the ground.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

Question number: 414

» Electrostatics » Capacitors

MCQ▾

Question

A capacitor of capacity C 1 is charged up to V volt and then connected to an uncharged capacitor of capacity C 2. Then final potential difference across each will be

Choices

Choice (4) Response

a.

C1VC1+C2

b.

C2VC1+C2

c.

(1+C2C1)

d.

(1C2C1)

Question number: 415

» Rotational Motion » Torque

MCQ▾

Question

A wheel having moment of inertia 5 kg -m 2 about its vertical axis, rotates at the rate of 60 rpm about this axis. The torque which can stop the wheel’s rotation in 1 minute would be

Choices

Choice (4) Response

a.

π15Nm

b.

2 π 15 N m

c.

π18Nm

d.

π6Nm

Question number: 416

» Properties of Solids & Liquids » Hooke's Law

MCQ▾

Question

The shape of stress vs strain graph within elastic limit is:

Choices

Choice (4) Response

a.

Straight line

b.

ellipse

c.

Parabolic

d.

curve line

Question number: 417

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

If h be the elevation or depression of a spherical surface from the plane glass plate and o be the mean distance between two consecutive points corresponding to the impressions made by the three legs of a spherometer then the radius of curvature is

Choices

Choice (4) Response

a.

l26h+h2

b.

l26h+2h

c.

l26h+h22

d.

l26hh2

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