A laser ( light amplification of stimulated emission of radiation ) provides a coherent( in phase ) nearly monochromatic source of high intensty light. Lasers are used in eye surgery, CD // DVD players basic research, etc. some modern eye lasers can be "tuned" to emit a desired wavelength. The following table shows the lambda( nm ) , v( s^(-1))andE ( J) but some of the data is missing : Which of the following statement (s) is // are correct ? ( i) E lies in UV region while G lies in visible region (ii) The energies D and F alone are not sufficient to remove electron from isolated gaseous H-atom. (iii) In the spectrum the increasing order of lambda for all type of lasers is II lt III lt IV lt I (iv) None of the above statement is correct

A laser ( light amplification of stimulated emission of radiation ) pr

1.	A laser ( light amplification of stimulated emission of radiation ) provides a coherent( in phase ) nearly monochromatic source of high intensty light. Lasers are used in eye surgery, CD // DVD players basic research, etc. some modern eye lasers can be "tuned" to emit a desired wavelength. The following table shows the lambda( nm ) , v( s^(-1))andE ( J) but some of the data is missing : Which of the following statement (s) is // are correct ? ( i) E lies in UV region while G lies in visible region (ii) The energies D and F alone are not sufficient to remove electron from isolated gaseous H-atom. (iii) In the spectrum the increasing order of lambda for all type of lasers is II lt III lt IV lt I (iv) None of the above statement is correct
Answer» Only (IV) (i) and (II) only (i),(ii) and (III) only (ii) and (iii) only ANSWER :B