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

Related Mcqs:

1. The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it?

   A. 10% B. 20% C. 30% D. 50% Submitted by: Jameel Ahmed Solangi (Larkana)...

2. The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a ____________?

   A. Diatonic scale B. Fahrenheit Scale C. Richter scale D. Celsius Scale E. None of these...

3. Second layer of Earth’s atmosphere is__________?

   A. Stratosphere B. Mesosphere C. Troposphere D. Thermosphere Submitted by: Rehana Mallah...

4. Which layer of the atmosphere lies close to the earth?

   A. Stratosphere B. Mesosphere C. Troposphere D. Thermosphere Submitted by: Ali Mallah...

5. Sound waves are _________ waves.

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

6. 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...

7. Ultrasonic waves are those sound waves having frequency __________?

   A. between 20 hertz and 1000 hertz B. between 1000 hertz and 20000 hertz C. less than 20 hertz D. more than 20 kilohertz Submitted by: Habib Baloch...

8. 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...

9. Which country operated the world’s largest radio telescope Aperture Spherical Radio Telescope in September-2016?

   A. USA B. India C. China D. Norway...

10. The ozone layer is at height of________kilometers from the surface of the Earth?

    A. 10 to 20 B. 20 to 30 C. 30 to 40 D. 40 to 50 Submitted by: ★ ɪʟʏᴀsɪʟᴜ ★...