Physics - Study Mode

[#336] A gas thermometer is more sensitive than a liquid thermometer because a gas :
Correct Answer

(B) Expands more than a liquid

Explanation

Solution: Since gas expands much more than liquid on changing the temperature. Thus a gas thermometer is more sensitive than liquid thermometer as gas can expand more even in very small change in temperature. So the measurement has to be precised.

[#337] What is the SI unit of temperature?
Correct Answer

(A) Kelvin

Explanation

Solution: Kelvin is the base unit of temperature in the SI system (International System of Units).

[#338] Earliest thermometer was developed by
Correct Answer

(D) Galileo

Explanation

Solution: Thermoscopes were the earliest types of thermometers and they only showed changes in temperature but didn't show numerical values. One of the first thermoscopes was developed by Italian inventor, Galeleo Galilei in 1593.

[#339] The absolute zero is a temperature at which ________
Correct Answer

(A) Molecular motion in a gas would cease

Explanation

Solution: The absolute zero is a temperature at which molecular motion in a gas would cease.

[#340] Sound of frequency below 20 Hz is called
Correct Answer

(B) infrasonic

Explanation

Solution: Sound of frequency below 20 Hz is called Infrasonic.