Thermodynamics (AIIMS Physics): Questions 6 - 7 of 7

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Question number: 6

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A large steel wheel is to be fitted on to a shaft of the same material. At Equation , the diameter of the shaft is 10.00 cm and the diameter of the hole is 9.98 cm. The shaft is cooled using ‘dry ice’. At what temperature of the shaft does the wheel slip into the shaft?

(Give Equation for steel Equation ).

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 7

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

If the system takes 150 Cal. heat, and releases 60 cal. to sink, if source temperature is 115°C find the sink temp –

Choices

Choice (4) Response

a.

120 °C

b.

37.4°C

c.

54°C

d.

127°C

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