Optics Question 71
Question: Assertion : For cooking in a microwave oven, food is always kept in metal containers. Reason : The energy of microwave is easily transferred to the food in metal container.
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 both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: D
Solution:
The atoms of the metallic container are set into forced vibrations by the microwaves.
Hence, energy of the microwaves is not efficiently transferred to the metallic container.
Hence food in metallic containers cannot be cooked in microwave oven.
Normally in microwave oven the energy of waves is transferred to the kinetic energy of the molecules.
This raises the temperature of any food.
