NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1570 - 1574 of 2320

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Question number: 1570

» Atoms and Nuclei » Radioactivity

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MCQ▾

Question

In the disintegration series

The value of Z and A respectively will be,

Choices

Choice (4)Response

a.

88,230

b.

90,234

c.

92,240

d.

91,231

Question number: 1571

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

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MCQ▾

Question

In a given process for an ideal gas, ∆ W = 0 and ∆ Q < 0. Then for the gas

Choices

Choice (4)Response

a.

The volume will increase

b.

The temperature will decrease

c.

The pressure will remain constant

d.

The temperature will increase

Question number: 1572

» Thermodynamics » Concept of Temperature

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MCQ▾

Question

An ideal gas is taken from point A to the point B, as shown in the P-V diagram, keeping the temperature constant. The work done in the process is

Graph of pressure vs volume from point A to B

Graph of Pressure vs Volume from Point a to B

In above figure we shows that expansion of ideal gas from point A to B.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1573

» Work, Energy and Power » Work Done

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MCQ▾

Question

For a reversible process, unnecessary conditions are

(1) In the whole cycle of the system, the loss of any type

(2) That the process should be too fast

(3) That the process should be slow so that the working substance should remain in thermal and mechanical equilibrium with the surroundings

(4) The loss of energy should be zero and it should be quasi-static

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

Choices

Choice (4)Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1,2 and 3 are correct

d.

1 and 2 are correct

Question number: 1574

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

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MCQ▾

Question

Which of the following processes are irreversible?

(1) Transfer of heat by radiation

(2) Electrical heating of a Ni chrome wire

(3) Transfer of heat by conduction

(4) Isothermal compression

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

Choices

Choice (4)Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1,2 and 3 are correct

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