1) The acceleration due to gravity increases with

none of these
the decrease in altitude
no change in altiude
the increase in altitude

2) Who is father of hydrogen bomb?

Edward Teller
Oppenheimer
James B'Connosly
Otto Hahn

3) Who first constructed diode?

Fleming
Hertz
Bardeen
Richard

4) The energy associated with each photon is

(hv)-1
h/v
v/h
hv

5) The working principle of a washing machine is

dialysis
reverse osmosis
centrifugation
diffusion

6) The source of solar energy is

nuclear fission
none of these
sinking of the sun
nuclear fusion

7) Expansion of LCD is

Liquid Crystal Diode
Light Crystal Display
Liquid Condesation Diode
Liquid Crystal Display

8) If the distance between two charges placed in air in increased two times, the force between them

decreases by four times
increases by two times
increases by four times
decreases by two times

9) The unit used to measure the supersonic speed is

Mach
Richter
Knots
Hertz

10) Which one of the following the best insulator?

Cotton
Ebonite
Paper
Wood