An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device. (A) Convex mirror of focal length 12 cm(B) Convex lens of focal length 24 cm(C) Concave mirror of focal length 24 cm(D) Convex lens of focal length 12 cm
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The answer is option three that is the concave mirror of focal length 24.
A concave mirror is a design with a reflecting surface at one turn which is covered on either inner or inner side. I
t is also known as a circulation mirror because this reflective surface combines the light incident on its surface and reflects the parallel rays of light towards a normal focus.
It is made from a circular interior that is quieter on the inside. In this Knowledge article, we become familiar with some of the uses of a concave mirror.
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Answer:.(c)
Explanation:
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