Write the names of instruments developed by the use of properties of reflection and refraction of mirrors,lenses,and prisms.
(N/A) number of optical devices and instruments have been designed utilizing the reflecting and refracting properties of mirrors,lenses,and prisms.
Common examples of such optical instruments include:
$1$. Periscope: Uses reflection (mirrors).
$2$. Kaleidoscope: Uses reflection (mirrors).
$3$. Binoculars: Uses both reflection (prisms) and refraction (lenses).
$4$. Telescopes: Uses reflection (mirrors) and refraction (lenses).
$5$. Microscopes: Uses refraction (lenses).
Additionally,the human eye is one of the most important natural optical instruments.
Common examples of such optical instruments include:
$1$. Periscope: Uses reflection (mirrors).
$2$. Kaleidoscope: Uses reflection (mirrors).
$3$. Binoculars: Uses both reflection (prisms) and refraction (lenses).
$4$. Telescopes: Uses reflection (mirrors) and refraction (lenses).
$5$. Microscopes: Uses refraction (lenses).
Additionally,the human eye is one of the most important natural optical instruments.
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To find the focal length of a convex mirror,a student records the following data:
Object Pin Convex Lens Convex Mirror Image Pin $22.2 \, cm$ $32.2 \, cm$ $45.8 \, cm$ $71.2 \, cm$
The focal length of the convex lens is $f_1$ and that of the mirror is $f_2$. Taking index correction to be negligibly small,$f_1$ and $f_2$ are close to:
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| $22.2 \, cm$ | $32.2 \, cm$ | $45.8 \, cm$ | $71.2 \, cm$ |
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