NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 540 - 544 of 2320

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Question number: 540

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

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MCQ▾

Question

Diamagnetic substances are

Choices

Choice (4)Response

a.

Strongly repelled by magnets

b.

Feebly repelled by magnets

c.

Feebly attracted by magnets

d.

Strongly attracted by magnets

Question number: 541

» Magnetic Effects of Current and Magnetism » Bar Magnet

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MCQ▾

Question

A 30 cm long bar magnet is placed in the magnetic meridian with its north pole pointing south. The neutral point is obtained at a distance of 40 cm from the center of the magnet. Pole strength of the magnet is (The. horizontal component of earth’s magnetic field is 0.34 Gauss)

Choices

Choice (4)Response

a.

15.2 Am

b.

26.7 Am

c.

16.7 Am

d.

12.7 Am

Question number: 542

» Magnetic Effects of Current and Magnetism » Bar Magnet

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MCQ▾

Question

At magnetic equator of earth, angle of dip is

Choices

Choice (4)Response

a.

45°

b.

Zero

c.

90°

d.

180°

Question number: 543

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

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MCQ▾

Question

For the arrangement of two current carrying identical coils shown in the figure, the magnetic field at the center O is (N and a represent number of turns and radius of each coil) -

Current carrying identical coils

Current Carrying Identical Coils

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 544

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

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MCQ▾

Question

A square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field as shown in the figure. If the number of turns in it is 10 then the magnetic flux linked with the loop at any instant will be-

A square loop of side a in magnetic field

A Square Loop of Side a in Magnetic Field

Choices

Choice (4)Response

a.

20Ba 2

b.

10Ba 2 cos (ωt)

c.

10Ba

d.

10Ba 2

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