Physics-
General
Easy
Question
Assertion : A laser beam 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 then that of torch light.
- If both assertion and reason are true and the reason is the correct explanation of the assertion.
- If both assertion and reason are true but reason is not the correct explanation of the assertion.
- If the assertion and reason both are false.
- If assertion is false but reason is true.
Hint:
A laser beam is a beam of light which is light amplification by stimulated emission of radiation.
The correct answer is: If the assertion and reason both are false.
A laser beam is a beam of light which is light amplification by stimulated emission of radiation.
The energy per unit area of the laser beam is very high as compared to the torch light.
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