JEE Main 2016 · 9 Apr · Shift 1 · Physics Q18

PhysicsSingle correct+4 / -1Question 18 of 90

Microwave oven acts on the principle of :

transferring electrons from lower to higher energy levels in water molecule

giving rotational energy to water molecules

giving vibrational energy to water molecules

giving translational energy to water molecules

Answer and worked solution

Official answer: B

Microwaves match the rotational energy levels of water molecules; the molecules rotate faster and the energy appears as heat.

JEE Main 2016 · 9 Apr · Shift 1, Physics question 18