EASY

JEE Main/Advance

IMPORTANT

Earn 100

Consider a hollow cylinder of inner radius $a$ and outer radius $2 a,$ lateral surface of cylinder is insulated and there is a temperature difference of $Δ T$ between its ends, and $E_{0} = \frac{N π a^{2} k Δ T}{L}$ is the rate of energy flow, then value of $N$ is ( k : Thermal conductivity of material)

Important Questions on Thermal Properties of Matter

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 1

A faulty celsius thermometer has its fixed points marked at

5 ° C

and

95 ° C

respectively. What is the actual temperature of a liquid, if this thermometer reads it

59 ° C

HARD

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 2

The specific heat of a substance at temperature

t ° C

s = a t^{2} + b t + c

. The amount of heat required to raise the temperature of

' m'

grams of a substance from

0 ° C

t_{0} ° C

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 3

It takes

20 \min

to melt

10 g

of ice, when rays from the sun are focussed by a lens of diameter

5 cm

on a block of ice. If the latent heat for ice is

80 cal g

, the heat received per unit area per unit time at the surface of earth (in cal

{cm}^{- 2} \min^{- 1}

) is

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 4

In an energy recycling process,

x gm

of steam at

100 ° C

becomes water at

100 ° C

which converts

y gm

of ice at

0 ° C

into water at

100 ° C

. The ratio

\frac{x}{y}

will be

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 5

A flask of volume

V

is partially filled with mercury. It is found that at different room temperatures, the volume of air inside the flask remains the same. If

γ_{g}

and

γ_{m}

are the coefficient of cubical expansion of glass and mercury respectively, the volume of mercury in the flask is

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 6

A thermally insulated piece of metal is heated by supplying a constant power

P

. Due to this, the temperature of the metal starts varying with time as

T = α t^{\frac{1}{4}} + T_{0}

The heat capacity of the metal as a function of temperature is

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 7

The time period of a pendulum is given by

T = 2 π \sqrt{\frac{I}{g}}

If the temperature rises by

Δ θ

and coefficient of linear expansion of the wire is

α

, the change in time period is

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 10 - Thermal Properties of Matter>EXERCISE>Q 8

The compressional force required to prevent a metallic rod of cross-sectional area

A

from expanding, when it is heated to increase its temperature by

t ° C

, is (modulus of elasticity is

E

and coefficient of linear expansion is

α

)

Consider a hollow cylinder of inner radius a and outer radius 2a, lateral surface of cylinder is insulated and there is a temperature difference of ΔT between its ends, and E0=Nπa2kΔTL is the rate of energy flow, then value of N is ( k : Thermal conductivity of material)

Important Questions on Thermal Properties of Matter

Learn and Prepare for any exam you want !