Microwave oven acts on the principle of :

Microwaves

Microwaves are used for

Gas masks containing activated chrcoal to remove poisonous gases from atmosphere act on principle of

Raghav bought 25 washing machines and microwave ovens for Rs. 2,05,000. He sold 80% of the washing machines and 12 microwave ovens for a profit of Rs. 40,000. Each washing machine was marked up by 20% over cost and each microwave oven was sold at a profit of Rs. 2,000. The remaining washing machines and 3 microwave ovens could not be sold. What is Raghav’s overall profit/loss?

Why dose microwave oven heats up a food item containing water molecules most efficiently?

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