Explain what type of mirror is used in the following situations with reasons ?
(i) Huge shopping centres (ii) side/rear view mirror of a vehicle (iii) Solar water heater. 1.Due to wider field of view, convex mirrors are used for security purposes in shopping centres and big departmental stores. 2.A convex mirror forms an erect and diminished image of objects behind it. It increases the field of view and so, the drivers can see objects or traffic behind them over a large area. Hence, convex mirror is used as side/ rear view mirror in vehicles. 3.A parabolic (concave) mirror, also known as convergent mirror, concentrates solar radiation falling on it over a small area near to the focus. Hence concave mirror reflectors are used in solar water heaters.