Physics
A concave mirror has a …………… focus, whereas a convex mirror has a …………… focus.
- real and virtual, real
- real, virtual
- virtual, real
- virtual, real and virtual
Reflection
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Answer
real, virtual
Reason — A concave mirror has a real focus because the light rays incident parallel to the principal axis, after reflection actually pass through the focus.
A convex mirror has a virtual focus because the light rays incident parallel to the principal axis, appear to come from the focus after reflection from the mirror.
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