Physics-Magnetism & Electricity at Work (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 20 - 26 of 46

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Question number: 20

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A magnetic needle kept in a non-uniform magnetic field experiences

Choices

Choice (4) Response

a.

a torque but not a force

b.

a force and torque

c.

Neither a torque nor a force

d.

a force but not a torque

Question number: 21

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

One Tesla is equal to

Choices

Choice (4) Response

a.

10- 4 gauss

b.

10 7 gauss

c.

10 4 gauss

d.

10- 8 gauss

Question number: 22

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

The given figure represents a material which is

The image is A material .

The Image Is a Material.

Find the type of the material

Choices

Choice (4) Response

a.

paramagnetic

b.

diamagnetic

c.

ferromagnetic

d.

All of the above

Question number: 23

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

If a magnet is hanged with its magnetic axis then it stops in

Choices

Choice (4) Response

a.

magnetic meridian

b.

angle of dip

c.

geometric meridian

d.

Question does not provide sufficient data or is vague

Question number: 24

» Physics » Magnetism & Electricity at Work

Assertion-Reason▾

Assertion (Ꭺ)

V = IR is Ohm’s law

Reason (Ꭱ)

V - I graph is always a straight line passing through origin

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 25

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Unit of magnetic permeability is

Choices

Choice (4) Response

a.

Henry/meter

b.

Henry

c.

Ampere/meter 2

d.

Ampere/meter

Question number: 26

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Which of the following materials has got the maximum retentivity?

Choices

Choice (4) Response

a.

Zinc

b.

hard iron

c.

Copper

d.

Soft iron

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