NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1447 - 1450 of 2320

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Question number: 1447

» Properties of Solids & Liquids » Heat Transfer » Conduction

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

The equivalent thermal conductivity of two plates of same thickness in contact (series) is less than the smaller value of thermal conductivity.

Reason (Ꭱ)

For two plates of equal thickness in contact (series) the equivalent thermal conductivity is given by

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 1448

» Thermodynamics » Concept of Temperature

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MCQ▾

Question

An ideal gas expands in such a manner that its pressure and volume can be related by equation PV 2 = constant. During this process, the gas is

Choices

Choice (4)Response

a.

Heated

b.

First heated and then cooled

c.

Cooled

d.

Neither heated nor cooled

Question number: 1449

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

The volume of a solid rubber ball when it is carried from the surface to the bottom of a 200 m deep lake decreases by 0.1 %. The value for bulk modulus of elasticity for rubber will be

Choices

Choice (4)Response

a.

2 × l0 9 Pa

b.

2 × l0 4 Pa

c.

2 × 10 -4 Pa

d.

2 × l0 6 Pa

Question number: 1450

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

Edit
MCQ▾

Question

The ratio of wavelength of deuteron & proton accelerated by an equal potential is,

Choices

Choice (4)Response

a.

b.

c.

d.

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