AIIMS Physics: Questions 366 - 370 of 500

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Question number: 366

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

Question

The of mutual inductance of two coils when magnetic flux changes by 9 ×102Wb and current changes by 0.03 A is –

Choices

Choice (4) Response
a.

2 H

b.

3 H

c.

6 H

d.

9 H

Question number: 367

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.02 T, oscillating with frequency 150 Hz with its plane at right angles to magnetic field. What will be the induced electric field?

Choices

Choice (4) Response
a.

3voltsm

b.

84voltsm

c.

2πvoltsm

d.

42voltsm

Question number: 368

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A breaking strength of a wire of diameter 6mm is 3×106N . Find the breaking strength of another wire of the same material having diameter 3mm .

Choices

Choice (4) Response
a.

3×105N

b.

5×105N

c.

3.5×105N

d.

7.5×105N

Question number: 369

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

A radioactive substance decays to 18th of its initial activity in 48 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response
a.

32

b.

8

c.

30

d.

16

Question number: 370

» Properties of Solids & Liquids » Boyle's Law & Applications

MCQ▾

Question

A uniform cylinder of density σ=5gcm3 and length L floats vertically completely immersed in two liquids with length L1 immersed in a liquid of density ρ1=1gcm3 and remaining length L2 immersed in the other liquid of density ρ2=2gcm3 as shown in figure. The ratio L1L2 will be equal to –

A uniform cylinder immersed in two liquids

A Uniform Cylinder Immersed in Two Liquids

In figure a uniform cylinder vertically completely immersed in two liquids is shown. L1 is the height of the cylinder in liquid 1 and L2 is the height of the cylinder in liquid 2.

Choices

Choice (4) Response
a.

34

b.

43

c.

14

d.

15

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