PHYSICS ONE LINER SET 03

PHYSICS ONE LINER SET 03

1. Which layer of the earth is believed to have the heaviest mineral materials of highest density?
Central core
 
2. When milk is churned, how does the cream separate from it? Due to the centrifugal force
 
3. Sound travels faster in which thing? Iron than in air
 
4. Which reflects back more sunlight as compared to other three? Land covered with fresh snow
 
5. What minimum number of non-zero non-collinear vectors is required to produce a zero vector?
3
 
6. Which mirror is to be used to obtain a parallel beam of light from a small lamp? Concave mirror
 
7. If the temperature of a semiconductor rises, what is its resistivity? Decrease
 
8. ‘mho’ is the unit of which unit? Specificresistance
 
9. In which type of climate does the temperature never rise above 10°C throughout the year?
Tundra Climate
 
10. What is the product of the time period of a wave and its frequency? Unity