Assertion : A laser beam of 0.2 W can drill holes through a metal sheet whereas a 1000 W torch-light cannot.
Reason : The frequency of laser light is much higher than that of torch light.
(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