NEET Physics: Questions 753 - 756 of 2099

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Question number: 753

» Experimental Skills » Screw Gauge

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.

5 m/s

c.

Zero

d.

8 m/s

Question number: 754

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

MCQ▾

Question

A conducting wire in the shape of Y with each side of length l 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

A conducting wire in the shape of Y with each side of length l is placed in uniform magnetic field B.

Choices

Choice (4) Response
a.

Zero

b.

2 Blv sin (θ/2)

c.

2 Blv

d.

2 Blv cos (θ/2)

Question number: 755

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

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

n figure two circular coils arranged in three different situation.

Choices

Choice (4) Response
a.

Maximum in situation A

b.

Maximum in situation C

c.

Maximum in situation B

d.

The same in all situations

Question number: 756

» Experimental Skills » Screw Gauge

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.

97m

b.

107m

c.

73m

d.

127m

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