Question
State two differences between a convex and a concave lens.
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Answer
$1)$ Convex lens is thicker in the middle while concave lens is thinner in the middle.
$2)$ A convex lens converges the light ray falling on it, while a concave lens diverges the light ray falling on it.
$2)$ A convex lens converges the light ray falling on it, while a concave lens diverges the light ray falling on it.
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