Answer :
Microwave ovens cook food by transmitting microwaves into the food. These microwaves cause water molecules in the food to rotate quickly, generating heat and cooking the food rapidly. c. microwave ovens transmit microwaves into the food is the correct answer.
A microwave oven works by producing microwaves at a frequency of 2.45 GHz. These microwaves create an alternating electric field inside the oven. Water molecules, which are polar with a slightly positive end and a slightly negative end, absorb these microwaves and begin to rotate rapidly. This rapid rotation generates heat through a process known as dielectric heating, causing the food to warm up quickly. The correct answer is: c. microwave ovens transmit microwaves into the food.
Key Points:
- Microwaves induce an alternating electric field.
- Water molecules absorb microwaves and rotate rapidly.
- This rapid rotation generates heat, cooking the food.
