AIIMS (All India Institute of Medical Sciences) Physics: Questions 341 - 345 of 500

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Question number: 341

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

MCQ▾

Question

When a large bubble rises from the bottom of a lake to the surface, its radius is four times to its original radius. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is:

Choices

Choice (4) Response

a.

15H

b.

6H

c.

H

d.

12H

Question number: 342

» Oscillations and Waves » Periodic Functions

MCQ▾

Question

In an experiment, on the measurement of Equation , by a simple pendulum, the time period was measured with an accuracy of 0.1 % and the length was measured with an accuracy of Equation . The resultant value of Equation obtained with accuracy Equation . Than find the value of Equation .

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 343

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A conducting ring of radius 2 meter is placed in a uniform magnetic field B of 0.04 T, oscillating with frequency 500 Hz with its plane at right angles to magnetic field. What will be the induced electric field?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 344

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

A radioactive material has a half – life of 9 days. What fraction of the material would remain after 45 days –

Choices

Choice (4) Response

a.

0.03125

b.

0.625

c.

0.125

d.

0.0156

Question number: 345

» Electronic Devices » Junction Transistor

MCQ▾

Question

In an NPN transistor amplifier for common – emitter configuration, the current gain of the transistor is 160 and the collector current changes by 0.8 mA, so find the change in emitter current.

Choices

Choice (4) Response

a.

1.805mA

b.

0.08 mA

c.

1.8 mA

d.

0.805 mA

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