Benny's mother was finding it difficult to cook food in the kitchen there was no light in the kitchen due to a power cut. She complained about this to Benny. Benny took a big plane mirror from the house and made it stand in sunshine (outside the house) in such a way that sun's rays falling on it were diverted into the kitchen. This arranagement provided sufficient light in the kitchen due to which Benny's mother could finish her work in the kitchen comfortably.
(a) Which phenomenon of light is made use of by Benny in this case ?
(b) Benny's mother could also cook rice and dal by using a device kept in sunshine outside the kitchen in which a plane mirror is used as a reflector. Name the device.
(c) State four characteristics of images formed by a plane mirror.
(d) What values (or qualities) are displayed by Benny in this episode ?

Explanation

(a) Benny makes use of the phenomenon of reflection of light from a plane mirror.
(b) Solar cooker.
(c) The image formed by a plane mirror is (i) virtual and erect (ii) same size as the object (iii) same distance behind the mirror as the object is in front of the mirror (iv) laterally inverted (or sideways reversed).
(d) The values (or qualities) displayed by Benny in this episode are (i) Awereness (or knowledge) about the reflection of light (ii) Ability to apply knowledge in real life situations, when needed, and (iii) Desire to help his mother.