Name any two radiation emitted by the sun that are not visible to human eye?

What is the resolving power of human eye.

Name the plant cell visible with naked eye?

Name any two transition elements and any two inner transition elements.

Calculate the wavelength and energy of radiation emitted for the electronic transition from infinity to stationary state one of the hydrogen atom.

What is meant by accomodation of human eye?

Hydrogen atoms are excited on n=4 state. In the spectrum of emitted radiation, number of lines in the unltraviolet and visible regions are respectively-

The innermost layer of the human eye is

Calculate the wavalength of radiation emitted when electron in a hydrogen atom jumps from n=oo to n=1 .