Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 4

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IMPORTANT

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80 gm of water at 30°C are poured on a large block of ice at 0°C. The mass of ice that melts is

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Important Questions on Thermal Properties of Matter

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IMPORTANT

Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 5

In an experiment, a sphere of aluminium of mass

0.20 kg

is heated up to

150 ° C

. Immediately, it is put into water of volume

150 cc

at

27^{o} C

kept in a calorimeter of water equivalent to

0.025 kg

. The final temperature of the system is

40^{o} C

. The specific heat of the aluminium is(take

4.2 Joule = 1 calorie

)

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 6

Coal cannot be converted into one of the following forms of energy. This is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 7

Liquid oxygen at

50 K

is heated to

300 K

at a constant pressure of

1 atm

. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time correctly?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 1

What will be the ratio of temperatures of the sun and the moon in kelvin, if the wavelengths of their maximum emission radiations rates are

140 Å

and

4200 Å

, respectively?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 2

In which mode of transmission, the heat waves travel along straight line with the speed of light?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 3

One likes to sit under sun in the winter season because,

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 1

A body cools from

80^{o} C

to

50^{o} C

in

5

minutes. Calculate the time it takes to cool from

60^{o} C

to

30^{o} C

. The temperature of surroundings is

20^{o} C

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 11 - Thermal Properties of Matter>Exercise>Q 2

In a room where the temperature is

30^{o} C

, a body cools from

61^{o} C

to

59^{o} C

in

4

minutes. The time taken by the body to cool from

51^{o} C

to

49^{o} C

is