1. . A body that emits the maximum amount of heat for its absolute temperature is called________.
(A) White body
(B) Temperature body
(C) Black body
(D) Water body
2. . Pyrometers are generally used to measure ________.
(A) High temperature
(B) High pressure
(C) Low pressure
(D) Low temperature
3. . The total e.m.f of the thermoelectric pyrometer is given as __________.
(A) Peltier effect
(B) Thomson effect
(C) Seebeck effect
(D) Joule’s method
4. . Hotter objects emit more light at ___________ wavelength.
(A) Longer
(B) Constant
(C) Shorter
(D) Same
5. . Blackbody radiation is also called
(A) Thermal radiation
(B) Cavity radiation
(C) Complete radiation
(D) All these
6. . The amount of radiation energy emitted from a surface at a given wavelength depends on
(A) The material of the body
(B) The condition of its surface
(C) The surface temperature
(D) All of these
7. . The emission is heat radiation which depends on ___________.
(A) Pressure
(B) Flow of Heat
(C) Temperature
(D) Level
8. . The total radiation pyrometer receives a controlled sample of the total radiation of a hot body and focuses it on ___________.
(A) Pressure detector
(B) Temperature Detector
(C) Level Detector
(D) Intensity Detector
9. . Pyrometer is used to measure the temperature of___________.
(A) Moving objects
(B) Constant objects
(C) Remote source
(D) All of these