Current Electricity Charging Discharging Of Capacitors Question 15
Assertion : A laser beam with 0.2 W power can drill holes through a metal sheet, whereas 1000 W torch-light cannot. Reason : The frequency of laser light is much higher than that of torch light.
[AIIMS 1996]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason are both false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: C
Solution:
A laser beam is a beam of light which is produced by light amplification through stimulated emission of radiation. The energy per unit area of the laser beam is very high as compared to the torch light.
BETA
