Two convex lenses of focal lengths 20 cm and 40
cm and a concave lens of focal length 10 cm are
placed as shown below. An object is placed at a
distance of 20 cm. The value of x and y, for which
final rays comes out parallel to the principal axis,
are
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Two convex lenses of focal lengths 20 cm and 40
cm and a concave lens of focal length 10 cm are
placed as shown below. An object is placed at a
distance of 20 cm. The value of x and y, for which
final rays comes out parallel to the principal axis,
are959nuchsk
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