AIIMS Physics: Questions 337 - 341 of 500

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Question number: 337

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A particle moves on a circle of radius 5m such that the distance covered on the circle varies with time according to the law, s=3t2+5 . What is the total acceleration of the particle at t=2sec .

Choices

Choice (4) Response

a.

18ms2

b.

38ms2

c.

29.4ms2

d.

34.8ms2

Question number: 338

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

Consider a long uniform steel wire has a radius of 1.5 mm. If the speed of the transverse wave on it equal to 330ms , than the tension in the wire is – (The density of steel is 7800kgm3 )

Choices

Choice (4) Response

a.

0.6×103N

b.

600N

c.

6×103N

d.

60×103N

Question number: 339

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

If vibrations of a string are to be increased to a factor of six, then tension in the string must be made –

Choices

Choice (4) Response

a.

3 times

b.

9 times

c.

36 times

d.

6 times

Question number: 340

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

When a ball is thrown up vertically with velocity V0, it reaches a maximum height of ‘h’. If one wishes to half the maximum height then the ball should be thrown with velocity -

Choices

Choice (4) Response

a.

4V0

b.

14V0

c.

2V0

d.

12V0

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

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