An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth:

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:

Which of the following statements are correct?

1. Water waves and sound waves don't require a medium to travel.
2. Electromagnetic waves require a medium to travel.

Select the correct answer using the code given below:

Consider the following statements:

1. The discovery of the Higgs boson of which scientists are almost certain may discard Einstein's special theory of relativity.
2. Probable discovery of a particle, which moves faster than light may prove Stephen Hawking wrong.
3. Probable discovery of a particle that moves faster than light may go against Einstein's special theory of relativity.

Which of the statements given above is/are correct?

Archimedes' principle states that "When a body is immersed fully or partially in a fluid, it experiences an upward force that is equal to the weight of the fluid displaced by it'~ in this context consider the following which follows Archimedes' principle:

1. Ship and Submarine designing
2. Lactometer
3. Hydrometer

Select the correct answer using the code given below:

A rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?

1. Dispersion
2. Refraction
3. Internal reflection

Select the correct answer using the codes given below: