NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1552 - 1556 of 2142

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Question number: 1552

» Thermodynamics » Concept of Temperature

MCQ▾

Question

An ideal heat engine working between temperature T and r, has an efficiency η, the new efficiency of engine if both the source and sink temperature are doubled, will be

Choices

Choice (4) Response

a.

b.

η

c.

Equation

d.

Question number: 1553

» Atoms and Nuclei » Binding Energy Per Nucleon

MCQ▾

Question

If the mass of 3 Li 7 is 7.0163 a. m. u. , the binding energy per nucleon for 3 Li 7 will be,

Choices

Choice (4) Response

a.

39.25 MeV

b.

5.6 MeV

c.

1 MeV

d.

zero

Question number: 1554

» Atoms and Nuclei » Nuclear Fission and Fusion

MCQ▾

Question

Fission of nuclei is possible because the binding energy per nucleon in them,

Choices

Choice (4) Response

a.

Increases with mass number at low mass numbers

b.

Decreases with mass number at high mass number

c.

Decreases with mass number at low mass numbers

d.

Increases with mass number at high mass number

Question number: 1555

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

To double the volume of a given mass of an ideal gas at 27ºC keeping the pressure constant, one must raise the temperature in degree centigrade to

Choices

Choice (4) Response

a.

627

b.

327

c.

54

d.

600

Question number: 1556

» Atoms and Nuclei » Mass Defect

MCQ▾

Question

Consider the decay of radium- (Ra 226) atom into an alpha particle and radon- (Rn 222). Then, what is the mass defect of the reaction-

Mass of radium -226 atom = 226.0256 u

Mass of radon - 222 atom = 222.0715 u

Mass of helium - 4 atom = 4.0026 u

Choices

Choice (4) Response

a.

0.0053 u

b.

0.083 u

c.

0.0083 u

d.

All of the above

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