.......frequency is used microwave oven to warm up the food.

Plants use light energy to make their food.

(A) : In micro wave oven the energy is not wasted in heating up the vessel. (R) : The principle of microwave oven is to generate microwave radiation with magnetron source of appropriate freque­ncy in the work space of the oven where we keep food.

Microwaves are used for

Plants use nitrogen to manufacture food.

An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GhHz. What is the frequency of the microwave measured by the observer? (speed of light= 3xx10^(8)ms )

Arrange the following type of radiations in increasing order of frequency: (a) radiation from microwave oven (b) amber light from traffic signal (c). radiation from FM radio (d) cosmic rays from outer space and (e) X-rays

In a microwave oven, the food is kept in a plastic container and the microwave is directed towards the food. The food is cooked without melting or igniting the plastic container. Explain.

Assertion Microwaves are used in microwave oven for cooking purpose. Reason The frequency of microwaves is from 10^(14) to 10^(17) Hz .

The condition under which a microwave oven heats up a food item containing water molecules most efficiently is: