The core of gravity of a sprinter during the race lies

In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie

The particle required to continue the chain process of Uranium fission is:

Necessary element of change in solar energy to electric energy

The energy of the sun is mainly due to

For a ray of light to suffer total internal reflection it has to pass from

Of the four locations mentioned below, the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

Sodium vapour lamps glow with yellow colour. This is due to

An electron microscope gives higher magnification than an optical microscope, because:

The source of the sun's energy is the process of