NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Easy

1 of 1

Application +4 | -1

A thermometer is graduated in millimeters. It registers

-3 \mathrm{~mm}

when the bulb of thermometer is in pure melting ice and

22 \mathrm{~mm}

when the thermometer is in steam at a pressure of 1 atmosphere. The temperature in

{ }^{\circ} \mathrm{C}

when the thermometer registers

13 \mathrm{~mm}

View answer and explanation

Correct option: B

\frac{16}{25} \times 100

Option D (

\frac{{16}}{{22}} \times 100

) is correct because the temperature is calculated using the ratio of the length difference to the total length difference between the steam and ice points.

More Questions from THERMAL PROPERTIES OF MATTER

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Four identical calorimeters painted in different colours, are heated to same temperature and then allowed to cool in vacuum. Which will cool fastest? An ice cube of dimensions

60 \mathrm{~cm} \times 50 \mathrm{~cm} \times 20 \mathrm{~cm}

is placed in an insulation box of wall thickness

1 \mathrm{~cm}

. The box keeping the ice cube at

0^{\circ} \mathrm{C}

of temperature is brought to a room of temperature

40^{\circ} \mathrm{C}

. The rate of melting of ice is approximately.

(Latent heat of fusion of ice is

3.4 \times 10^5 \mathrm{~J} \mathrm{~kg}^{-1}

and thermal conducting of insulation wall is

\left. {0.05{\text{W}}{{\text{m}}^{ - 1}}^\circ {{\text{C}}^{ - 1}}} \right)

A black body radiates heat energy at the rate of

2 \times 10^5 \mathrm{~J} / \mathrm{sm}^2

at temp. of

127^{\circ} \mathrm{C}

. The temp of black body at which rate becomes

32 \times 10^5 \mathrm{~J} / \mathrm{s}-\mathrm{m}^2

is: The amount of radiation emitted by a perfectly black body is proportional to Amount of heat required to raise the temperature of a body through 1K is called its If Poisson’s ratio

\sigma

+ \frac{1}{2}

for a material, then the material is