a) Both A and R are correct and R is the correct explanation of A
b) Both A and R are correct and R is not the correct explanation of A
c) A is correct, R is incorrect
d) A is incorrect, R is correct
Assertion (A): Absorption spectrum consists of some bright lines separated by dark spaces. [
Reason (R): Emission spectrum consists of bright lines.
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Assertion : Absorption spectrum consists of some bright Iines separated by dark spaces. Reason : Emission spectrum consists of dark lines.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false
Correct option (d) A and R are false Explanation: Absorption spectrum is produced when white light is passed through a substance and transmitted light is analysed by a spectrograph. The dark spaces corresponds to the light radiation absorbed by the substance. And emission spectrum is produced by analysing the radiant energy emitted by an excited substance by a spectrograph. Thus. discontinuous spectra consisting of a series of sharp lines and separated by dark bands are obtained.
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