1. . Radiation thermometer cannot measure the temperature ___________________?
(A) Of liquid oxygen
(B) Of an object without coming in contact with it
(C) Inside a pressure vessel
(D) Of moving objects at high temperature
2. . A bolometer is __________________?
(A) Used for the measurement of thermal radiation
(B) Both A. & B.
(C) An element which senses optical input and delivers thermal output
(D) Neither A. nor B
3. . Nanomaterials are the materials with at least one dimension measuring less than _________
(A) 1 nm
(B) 100 nm
(C) 10 nm
(D) 1000 nm
4. . The melting point of particles in nano form ___________
(A) Increases
(B) Remains same
(C) Decreases
(D) Increases then decreases
5. . Which of the processes of materials was not described as Nanotechnology?
(A) Creation
(B) Separation
(C) Processing
(D) Consolidation
6. . The size of atoms is nearly ____________
(A) 0.01 nm
(B) 1 nm
(C) 0.1 nm
(D) Nm
7. . Infra red radiation sources may be _______________
(A) Thermal source
(B) Non-thermal source
(C) Thermal or non-thermal source
(D) None of the mentioned
8. . Sensing element in IR thermal detector will be ______________
(A) Thermo couple
(B) All of the mentioned
(C) Bolometer
(D) Thermo pile
9. . Which of the following is the correct relationship for sensitivity?
(A) Volt/amp
(B) Watt/volts
(C) Volt/watt
(D) Volts