22. An electrician is carrying out some repairs in your house. He wants to replace a fuse by a plece of wire. Woule
you agree? Give reasons for your response.
23. State the differences between convex and a concave lens.
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22. No, the electrician should not be allowed to replace the fuse in the house with a piece of wire. This is because every wire cannot be used as a fused filament. A fused filament must have a low melting point such that it could melt and break in response to a large amount of current.
23.A convex lens or converging lens focuses the light rays to a specific point whereas a concave lens or diverging lens diverges the light rays. When these lenses are combined, they produce sharper images. ... Most of the eyeglass lenses use combinations of convex and concave lenses.
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No, we would not agree to allow to replace the fuse by a wire. Wires in the fuses are of specific melting points. So wd should always use ISI marked fuses in our houses to prevent short circuits.
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