Properties of Solids & Liquids-Heat Transfer (NEET Physics): Questions 39 - 40 of 40

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Question number: 39

» Properties of Solids & Liquids » Heat Transfer » Conduction

Assertion-Reason▾

Assertion (Ꭺ)

The equivalent thermal conductivity of two plates of same thickness in contact (series) is less than the smaller value of thermal conductivity.

Reason (Ꭱ)

For two plates of equal thickness in contact (series) the equivalent thermal conductivity is given by

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT 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: 40

» Properties of Solids & Liquids » Heat Transfer » Convection

Appeared in Year: 2016

MCQ▾

Question

Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at 100°C , while the other one is at 0°C. If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is –

Choices

Choice (4) Response

a.

More then 50°C

b.

Less than 50°C but greater than 0°C

c.

50°C

d.

0°C

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