NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1139 - 1142 of 2184

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Question number: 1139

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

Mark the correct statements

(1) Sliding of molecular layer is much easier than compression or expansion

(2) Reciprocal of bulk modulus of elasticity is called compressibility

(3) Hollow shaft is much stronger than a solid rod of same length and same mass

(4) It is difficult to twist a long rod as compared to small rod

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

Question number: 1140

» Dual Nature of Matter and Radiation » De-Broglie Relation

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MCQ▾

Question

One electron & one proton is accelerated by equal potential. Ratio of their de-Broglie wavelengths is-

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1141

» Properties of Solids & Liquids » Heat Transfer » Conduction

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MCQ▾

Question

While measuring the thermal conductivity of a liquid, we keep the upper part hot and lower part cool, so that

Choices

Choice (4) Response

a.

Heat conduction is easier downwards

b.

It is easier and more convenient to do so

c.

Convection may be stopped

d.

Radiation may be stopped

Question number: 1142

» Properties of Solids & Liquids » Surface Energy and Surface Tension

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MCQ▾

Question

A capillary tube of radius R is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is M. If the radius of the tube is doubled, mass of water that will rise in the capillary tube will now be

Choices

Choice (4) Response

a.

b.

c.

d.