The energy required to knock an electron completely out of an atom is called excitation energy. (true/false)

Energy equivalent to mass of an electron is:

The energy required to remove an electron from a gaseous atom from its ground state is called

Mass cannot be converted into energy.(True/ False)

true or false complete count of individual in an area is called population.

Choose the correct alternative:- The energy required to launch an orbiting satellite out of earth’s gravitational influence is more//less than the energy required to project a stationary object at the same height (as the satellite) out of earth’s influence.

Calculate the energy required to excite an electron from first orbit of the hydrogen atom to the third orbit?

The energy of an electron in nth orbit of hydrogen atom is

Power multiplied by time gives energy.(true/false)