PHYSICS ONE LINER SET 39

PHYSICS ONE LINER SET 39

1. Light beam which is highly directional is called: Laser
 
2. Maximum biological damage occours due to – Gamma Rays
 
3. To eliminate the glare of headlight in motorcars– Polaroid’s are used.
 
4. Light House are placed with powerful Lights to – guide and warn the ships coming from different directions in the ocean.
 
5. 1st Law of thermodynamics is normally related to Law of conservation of
energy
 
6. Why white cloths are cooler as compare to black cloths? They reflects the whole light
 
7. At the Highest value of black body radiations, it wavelength – Decreases with increasing temperature.
 
8. A white and smooth surface is – Bad absorber and good reflector of 
Heat.
 
9. Unit of plank’s constant is – JS
 
10. Heat of a Reaction does not depends upon – Physical state of product and Reactant