Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 62

MEDIUM

NEET

IMPORTANT

Earn 100

Two rods one of aluminium of length $l_{1}$ having coefficient of linear expansion $α_{a},$ and other steel of length $l_{2}$ having coefficient of linear expansion $α_{s}$ are joined end to end. The expansion in both the rods is same on variation of temperature. Then the value of $\frac{l_{1}}{l_{1} + l_{2}}$ is

50% studentsanswered this correctly

Important Questions on Thermal Properties of Matter

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 63

A difference of temperature of

25 ° C

is equivalent to a difference in Fahrenheit :

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 65

The absolute zero is the temperature at which

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 66

Absolute zero

(0 K)

is that temperature at which

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 67

The temperature on Celsius scale is

25 ° C

. What is the corresponding temperature on the Fahrenheit scale

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 68

Two thermometers are used to record the temperature of a room. If the bulb of one is wrapped in wet hanky

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 69

A centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers

140^{o} F

. What is the fall in temperature as registered by the centigrade thermometer?

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 70

Value of

- 40 ° C

in Fahrenheit scale is:

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 15 - Thermal Properties of Matter>Exercise-1>Q 71

If temperature of an object is

140 ° F

, then its temperature in centigrade is