Which of the following is used in oven?
(a) Arrange the following radiations in the order of their increasing wavelength :
X rays, infrared rays, radio waves, gamma rays, and micro waves.
(b) Name the radiation which is used for satellite communication.
Which of the following are used to study the growth of foetus inside the mother's womb ?
(a) radio waves (b) X-rays (c) infrared waves (4) sound waves