NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1138 - 1141 of 2320

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Question number: 1138

» Atoms and Nuclei » Energy Levels

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MCQ▾

Question

In figure the energy level diagram of an atom with one electron knocked out is shown. Which of the following relation is true?

( is frequency of K β X-ray of a material, is frequency of K α X-ray of same material and is the frequency of L α X-ray of same material)

Finding the correct relationship of the energy level diagram

Finding the Correct Relationship of the Energy Level Diagram

Choices

Choice (4)Response

a.

b.

c.

d.

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

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