Persistance of vision is the principle behind?

Related Mcqs:

1. Night vision is possible with the help of ___________?

   A. Red light
   B. Violet light
   C. Infrared Rays
   D. Ultra violet Light
   E. None of these

2. Which one of the following sets of color combinations is added in color vision in TV’?

   A. Red, green and blue
   B. Orange, back and violet
   C. White. red and yellow
   D. Yellow, green and blue

3. Which types of waves are used in a night vision apparatus ?

   A. Radio Waves
   B. Micro Waves
   C. Infrared Waves
   D. Magnetic waves

   Submitted by: Haziq

4. Quartz crystal in quartz watches work on the principle called?

   A. Photoelectric effect
   B. Stark effect
   C. Thermionic effect
   D. Piezo-electric effect
   E. None of these

5. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

   A. red waves
   B. Infrared waves
   C. Ultrasonic
   D. super sonic
   E. None of these

6. Atomic power plant works on the principle of?

   A. fission
   B. fusion
   C. thermal combustion
   D. combined effect of all the above three

   Submitted by: Malik Asghar Hussain

7. A transformer works on the principle of _______________?

   A. Self induction
   B. Mutual induction
   C. Generator
   D. Inverter

   Submitted by: Malik Asghar Hussain

8. Washing machine is working on the principle of?

   A. Photoelectric effect
   B. Electric-magnetic induction
   C. Centrifugation
   D. None of these

   Submitted by: fahad mehsud

9. Hydrogen bomb is based on the principle of ________ ?

   A. Nuclear fusion
   B. Artificial radioactivity
   C. Natural radioactivity
   D. Nuclear fission

   Submitted by: Rashid Mehmood

10. SONAR is based on the principle of___________?

    A. Echo
    B. reverberation
    C. resonance
    D. None of these

    Submitted by: Abid Otho