To get a virtual, erect and enlarged image using a spherical mirror, the object must be placed _____________.
between the pole (P) and the principal focus (F) of a concave mirror
Correct Answer: Between the pole (P) and the principal focus (F) of a concave mirror
Image characteristics at different object positions for a concave mirror:
| Object Position | Image Nature |
|---|---|
| Beyond C | Real, inverted, diminished (between F and C) |
| At C | Real, inverted, same size (at C) |
| Between C and F | Real, inverted, enlarged (beyond C) |
| At F | Real, inverted, at infinity |
| Between P and F | Virtual, erect, enlarged (behind mirror) |
A convex mirror always gives virtual, erect, diminished images — never enlarged.
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Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
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A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
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