Question

The temperature of sun is measured with
a) platinum resistance thermometer
c) pyrometer
b) gas thermometer
d) vapour pressure thermometer
id thermometers
1​

Answer 1

Explanation:

platinum thermometer: A platinum resistance thermometer (PRT) is a device which determines the temperature by measuring the electrical resistance of a piece of pure platinum wire.

gas thermometer: A gas thermometer measures temperature by the variation in volume or pressure of a gas. 

pyrometer: A pyrometer is a non-contacting device that intercepts and measures thermal radiation, a process known as pyrometry. This device can be used to determine the temperature of an object's surface.  

vapour pressure thermometer: a thermometer in which the variable saturated vapor pressure of a volatile liquid is used as a measure of the temperature 

As the temperature of the sun is very high, a non-contact type temperature measurement is needed. So pyrometer will be used to measure the temperature of the sun.

Answer 2

Answer:

$option \: (b) \: is \: correct \: one \:$

pyrometer...

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