Which one of the following materails can not be used to make a lens?
Which one of the following materails can not be used to make a lens?
Solution
✅ Correct Option: 4
A lens must be transparent so that light can pass through and be refracted. Glass, plastic and even water (held in a suitable container) transmit light and can form lenses. Clay is opaque, so it cannot function as a lens.
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