Which one of the following waves are used by the common TV remote control?

Related Mcqs:

1. Sound waves are _________ waves.

   A. Transverse
   B. Electromagnetic
   C. Longitudinal
   D. None of these

2. P Waves are also said to be __________ waves?

   A. Push-pull
   B. Side-side
   C. Up-down
   D. None of the above

   Submitted by: Rashid Mehmood

3. Which of the following waves have smallest velocity in vacuum?

   A. Ultraviolet
   B. Sound
   C. Infra-Red
   D. Micro

   Submitted by: Malik Asghar Hussain

4. When sound waves travel from air to water which of the following quantities remains unchanged?

   A. Speed
   B. Frequency
   C. Intensity
   D. Wavelength

   Submitted by: Rashid Mehmood

5. Which among the following waves is used for communication by artificial satellites ?

   A. Micro waves
   B. Radio waves
   C. A. M.
   D. Infra-red waves

   Submitted by: Abid Hussain

6. 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

7. Which rays are trapped in our galaxy by magnetic waves?

   A. Alpha rays
   B. Gamma rays
   C. Cosmic rays
   D. None of these

   Submitted by: Malik Asghar Hussain

8. Which layer of the atmosphere reflects radio waves back to the earth’s surface?

   A. Troposphere
   B. Stratosphere
   C. Ozone layer
   D. Ionosphere

   Submitted by: Aamir Hussain Laghari

9. 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

10. Earthquake waves travel faster in __________?

    A. Water
    B. Flexibl rock
    C. Air
    D. Soil

    Submitted by: G.M Zuhrani