Solar furnace is a structure used to harness the rays of the sun in order to produce high temperatures. This is achieved by using a curved mirror (or an array of mirrors) acting as a parabolic reflector to concentrate light (Insolation) on to a focal point. The temperature at the focal point may reach up to 3,000 degrees Celsius, and this heat can be used to generate electricity, melt steel or make hydrogen fuel.
Q1] ?
Convex
Concave
Plane
All of the above
Q2] What is the focal length of mirror having radius 20 cm? *
20 cm
40 cm
10 cm
5 cm
Q3]What is the nature of mirror that is used in Solar furnace? *
Converging mirror
Diverging mirror
Q4]Same mirror, can be used in? *
Torch
Vehicles headlight
Shaving mirror
All of the above
Q5] What will be the nature image formed by this mirror when object is placed at a distant? *
Virtual, erect and diminished
Virtual, erect and enlarged
Real, inverted and highly diminished
Real, inverted and enlarged
Answers
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Answer:
q1 concave
q2 10 cm
q3 converging
q4 all of the above
q5 real inverted and highly diminished
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