Consider the following statements X-rays

1. can pass through thin sheets of aluminium.

2. can be deflected by magnetic field.

3. move with a velocity less than the velocity of ultraviolet rays in vacuum.

Which of the statement(s) given above is/are correct?

Consider the following statements

1. X-rays show transverse wave characteristics

2. X-rays can eject electrons from certain metal surfaces.

3. X-rays of 0.1 A are harder than X-rays of 0.2A

Which of the statement(s) given above is/are correct?

Consider the following statements:

I. A geostationary satellite is placed at an approximate height of 10000 km.

2. FM transmission of music is a very good quality because the atmosphere or man-made noises, which are generally frequency variations can do little harm.

Which of the following statements given above is/are correct?

Consider the following statements:

1. All radioactive elements decay exponentially with time.

2. Half-life time of radioactive element is the time required for one-half of the radioactive atoms to disintegrate.

3. Age of the Earth can be determined by radiocarbon dating.

4. Half-life time of a radioactive element is 50% of its average life period.

Which of the statements given above are correct?

Consider the statements

1. Photon is a particle of light.

2. Mass of photon is not defined.

3. Speed of photon is as the speed of light.

4. Photons are charged.

Which options is/are correct?