A ray drawn parallel to principal axis falls on the concave lens .
Draw the path of ray after refraction?
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A ray drawn parallel to principal axis falls on the concave lens ...
see to it....!!!
A ray parallel to principal axis will pass through principal focus in case of concave mirror.
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(a) The diagram to show the incident ray and its corresponding emergent ray is shown here.
(b) The point where incident ray when produced meets the principal axis is called first focus.
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