Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 34

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A $2100 W$ continuous flow geyser (instant geyser) has water inlet temperature of $10 ° C$ while the water flows out at the rate of $20 g s^{- 1}$ . The outlet temperature of water must be about,

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Important Questions on Thermal Properties of Matter

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 35

A continuous flow water heater (geyser) has an electrical power rating of

2 kW

and efficiency of conversion of electrical power into heat is

80 %

. If water is flowing through the device at a rate of

100 cc s^{- 1}

and the inlet temperature is

10 ° C

, the outlet temperature will be,

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 36

The thermal capacities ot two bodies are in the ratio of

1 : 4

. lf the rate of loss of heat are equal for the two bodies under identical conditions or surroundings, then the ratio of rate of fall of temperature of the two bodies is -

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 37

Absolute zero temperature is one at which-

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 38

If for a gas,

\frac{R}{C_{v}} = 0.67

, the gas is made up of molecules which are

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 39

$22 g$ of ${CO}_{2}$ at $27 {}^{\circ}C$ is mixed with $16 g$ of $O_{2}$ at $37 {}^{\circ}C$ . The temperature of the mixture is:-

(At room temperature, degrees of freedom of ${CO}_{2} = 7$ and degrees of freedom of $O_{2} = 5$ )

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Conceptual Questions)>Q 40

The adiabatic bulk modulus of a diatomic gas at atmospheric pressure is

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Previous Year Questions)>Q 1

A new scale of temperature (which is linear) called the

W

scale, the freezing and boiling points of water at

39 º W

and

239 º W

respectively. What will be the temperature on the new scale, corresponding to a temperature of

39 º C

on the Celsium scale?

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Beta Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise (Previous Year Questions)>Q 2

If

C_{p}

and

C_{v}

denote the specific heats (per unit mass) of an ideal gas of molecular weight

M,

where

R

is gas constant, then