NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 756 - 760 of 2320

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Question number: 756

» Experimental Skills » Screw Gauge

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MCQ▾

Question

2 bodies of different masses of 3 kg and 6 kg are moving with, velocities 20 m/s and 10 m/s towards each other due to mutual gravitational attraction. What is the velocity of their center of mass?

Choices

Choice (4)Response

a.

6 m/s

b.

8 m/s

c.

5 m/s

d.

Zero

Question number: 757

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

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A conducting wire in the shape of Y with each side of length is moving in a uniform magnetic field B, with a uniform speed v as shown in fig. The induced emf at the two ends X and Y of the wire will be-

A conducting wire shape of Y in uniform magnetic field

A Conducting Wire Shape of Y in Uniform Magnetic Field

Choices

Choice (4)Response

a.

2 Blv sin (θ/2)

b.

2 Blv

c.

2 Blv cos (θ/2)

d.

Zero

Question number: 758

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

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Question

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be

Circular coils in different situation

Circular Coils in Different Situation

Choices

Choice (4)Response

a.

The same in all situations

b.

Maximum in situation C

c.

Maximum in situation A

d.

Maximum in situation B

Question number: 759

» Experimental Skills » Screw Gauge

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MCQ▾

Question

If linear density of a rod of length 3m varies as λ = 2 + x them the position of the center of gravity of the rod is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 760

» Work, Energy and Power » Work Done

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Question

A chain of linear density 10 kg/m and length 8 m is lying on the table with 2 m of chain hanging from the edge. The work done in lifting the chain on the table will be –

Choices

Choice (4)Response

a.

176 J

b.

532 J

c.

116 J

d.

392 J

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