PHYSICS ONE LINER SET 01

PHYSICS ONE LINER SET 01

1. Which instrument used for finding out wind-direction? wind vane
 
2. Why is ‘Beaufort Scale’ used? To measure wind velocity
 
3. What denotes the smallest temperature? 1° on the Kelvin scale
 
4. A temperature at which both the Fahrenheit and the centigrade scales have the same value?
-40°
 
5. Angular separation between two colours of the spectrum depends upon which
thing?
Angle of deviation
 
6. Total internal reflection of light is possible when light enters from which thing? Water to air
 
7. What is a suitable unit for expressing electric field strength? N/C
 
8. The unidirectional property of a pn-junction is useful for its use as which thing? Rectifier
 
9. Thermal decomposition of alkanes is known as which name? Cracking
 
10. Which energy of the electron at absolute zero is called? Fermi energy