During a thunderstorm, the thunder in the skies is produced by the:

1. Meeting of cumulonimbus clouds in the sky.
2. Lightning that separates the nimbus clouds.
3. Violent upward movement of air and water particles.

Select the correct answer using the codes given below.

Consider the following field in which photonics technology is used:

1. Electronics
2. Telecommunications
3. Health sector
4. Defense sector

Select the correct answer using the code given below:

Consider the following about Cryogenics find its application?

1. Space Technology
2. Telemetry
3. Magnetic levitation
4. Blood Banking
5. Surgery
6. X-Ray

Select the correct answer using the code given below:

Satellites with communication transponders are used for:
1. Telecommunication
2. Radio networking
3. Telemedicine
Select the correct answer from the code given below:

Consider the following statements regarding Remote Sensing Satellites:

1. It is usually placed in Lower earth orbit.
2. It can be used for climate monitoring and Climate research purposes.
3. Radio networking signals are received from this satellite.

Which of the statements given above is/are correct?

Consider the following statements about Cryogenic engines:

1. It makes the launch of heavy satellites into space easier.
2. They can also be used in Missiles.
3. They help in easy maneuvering of the launch vehicles at faster speeds.

Which of the statements given above is/are true?

Which of the following statements are correct about the photoelectric effect?

1. When Light strikes at the surface, electrons ejected without any time lag.
2. When a very weak yellow light shines on the potassium metal, the photoelectric effect is observed.

Select the correct answer using the code given below: