Subject :NSO Class : Class 8
Which of the following mirrors is/are used in solar cooker?
APlane mirrors
BConcave mirrors
CConvex mirrors
DBoth A and B
Plane mirrors are also used in solar cookers. Plane mirrors are used in Box Solar Cookers. The plane mirrors are inclined at an angle to reflect sunlight towards the box. In parabolic solar cookers, concave mirrors are used to focus sunlight towards the cooker to cook food. Hence, the answer should be both A and B.
Ans 1:
Class : Class 8
Plane mirrors are used in Box cookers to reflect sunlight towards the box whereas the parabolic solar cookers use concave mirrors to concentrate the Sun's heat towards the box. Hence, the correct answer is (D) Both A and B
Ans 2:
Class : Class 8