McqMate
| Q. |
A concave lens always forms an image which is – |
| A. | Real and erect |
| B. | Virtual and erect |
| C. | Real and inverted |
| D. | Virtual and inverted |
| Answer» B. Virtual and erect | |
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Explanation: Concave lens possesses at least one surface that curves inwards. It is a diverging lens, spreading out those light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia). After light rays have passed through the lens, they appear to come from a point called the principal focus. The image formed by a concave lens is virtual, upright, and smaller than the object, and it cannot be projected onto a screen. |
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