PHYSICS ONE LINER SET 07

PHYSICS ONE LINER SET 07

1. Which is the process in which no heat enters or leaves? Adiabatic
 
2. By which permeabilty is a super conductor characterised? Zero permeability
 
3. How is the speed of light with the rise in the temperature of the medium? Remains unaltered
 
4. Pitch of the voice of women generally– Higher than that of men
 
5. When do all the magnetic materials lose their magnetic properties? Strongly heated
 
6. A hollow sphere of copper is positively charged, Then what will the electric field be inside the sphere?
Zero
 
7. In our houses we get 220 V A. C What does the value 220 represent? Effective voltage
 
8. A small weight is put on the pressure cooker. It increases the pressure of the
steam. Why?
Area of contact is small
 
9. How can one can distinguish a telescope from a microscope? By observing size of the lens
 
10. Which type of sound is produced by a bat? Ultrasonic