Ozone layer blocks the radiations of wave length:
(1.) less than 3 × 10 − 7 m
(2.)equal to 3 × 10 − 7 m
(3.)more than 3 × 10 − 7 m
(4.)All of the above

Options

A. `less than 3 xx 10^(-7)m`
B. equal to`3 xx 10^(-7)m`
C. more than `3 xx 10^(-7) m`
D. none of these

Answer

A