| A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X). |
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| (a) This device is a concave lens of focal length 8 cm. |
| (b) This device is a convex mirror of focal length 8 cm. |
| (c) This device is a convex lens of focal length 4 cm. |
| (d) This device is a convex lens of focal length 8 cm. |
Answer:
(d) This device is a convex lens of focal length 8 cm.
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