NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1412 - 1416 of 2320

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Question number: 1412

» Properties of Solids & Liquids » Young's Modulus

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MCQ▾

Question

For a given material, the Young’s modulus is 2.4 times that of rigidity modulus. Its Poisson’s ratio is

Choices

Choice (4)Response

a.

1.2

b.

0.2

c.

2

d.

1.02

Question number: 1413

» Wave Optics » Huygens' Principle

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Assertion-Reason▾

Question

Assertion (Ꭺ)

No interference pattern is detected when two coherent sources are infinitely close to each other.

Reason (Ꭱ)

The fringe width is directly proportional to the distance between the two slits.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Ꭺ is true but Ꭱ is false

Question number: 1414

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

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Assertion-Reason▾

Question

Assertion (Ꭺ)

The de-Broglie wavelength of a molecule varies inversely as the square root of temperature.

Reason (Ꭱ)

The root mean square velocity of the molecule is proportional to square root of absolute temperature.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is false but Ꭱ is true

Question number: 1415

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

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MCQ▾

Question

Slope of curve is-

(Where, V 0 = Stopping potential and ν = frequency)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1416

» Atoms and Nuclei » Energy Levels

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MCQ▾

Question

The wavelength of radiation emitted is λ 0 when an electron jumps from the third to the second orbit of hydrogen atom. For the electron jump from the fourth to the second orbit of the hydrogen atom, the wavelength of radiation emitted will be,

Choices

Choice (4)Response

a.

b.

c.

d.

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