What is absorption spectrum?

Which of the following statements about absorption spectrum is correct ?

Match it . {:(" a) Electron jumps from ground state to excited " ,, " (i) absorption spectrum "), (" b) Electron jumps from excited state to ground state " ,, " (ii) emission spectrum "):}

(A) Its is not possible that all the lines avail-able in the emission spectrum will also be available in the absorption spectrum (R) The spectrum of hydrgen atom is only absorption spectrum

(A) Hydrogen atom consists of only one electron but its emission spectrum has many lines. (R) Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.

What is emission spectrum?

Distinguish between emission and absorption spectrum.

Defined absorptive power of a body .What is the absorptive power of a perfect black body?

What is absorption ? Give one example.