What is the role of a plane mirror and a glass sheet in a solar cooker?
Answer :
1) Plane Mirror in a cooker is used as a reflector to focus maximum rays of sun in to the cooker.
2) Glass Sheet allows the infrared and visible rays to enter the device. It also does not allow the infrared radiations to move out of the heating device to increase the wavelength of radiation inside the cooker which further increases the temperature.