Answer with true (T) or false (F) in the provided practice
The ability to vary the focal length is called the accommodation..()
2)The attenuation is the reduction in power of the beam..()
3)Pair production occurs at very low energy
()
4)The light refracted when it transfer in same media.
()
The energy of the photon or the quant of the radiation determine by the wave length
...()
[If it is false correct the sentence]
