NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1142 - 1146 of 2320

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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.

Question number: 1143

» Thermodynamics » Concept of Temperature

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Question

A given system undergoes a change in which the work done by the system equals the decrease In its internal energy. The system must have undergone an

Choices

Choice (4)Response

a.

Isobaric change

b.

Adiabatic change

c.

Isothermal change

d.

Isochoric change

Question number: 1144

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

A 4.0 m long copper wire of cross sectional area 1.5 cm 2 is stretched by a force of 4.8 × 10 3 N stress will be -

Choices

Choice (4)Response

a.

4.4 × l0 7 N/m 2

b.

5.0 × l0 7 KN/m 2

c.

3.2 × l0 7 N/m 2

d.

None of the above

Question number: 1145

» Wave Optics » Diffraction Due to a Single Slit Width of Central Maximum

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MCQ▾

Question

In Fresnel diffraction, if the distance between the disc and the screen is decreased, the intensity of central bright spot will

Choices

Choice (4)Response

a.

Remain constant

b.

decrease

c.

Increase

d.

Question does not provide sufficient data or is vague

Question number: 1146

» Properties of Solids & Liquids » Heat Transfer » Conduction

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MCQ▾

Question

Four rods of identical cross-sectional area and made from the same metal form the sides of square. The temperature of two diagonally opposite points are T and √2T respectively in the steady state. Assuming that only heat conduction takes place, what will be the temperature difference between other two points

Choices

Choice (4)Response

a.

b.

c.

0

d.

All of the above

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