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2 years ago

10

What type of lens is used to make objects appear smaller and clearer convex or concave?

1 answer:

GalinKa [24]2 years ago

5 0

The answer is Concave lenses

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How much heat is needed to melt 13.74 kg of silver that is initially at 20°C?

salantis [7]

Answer:

$Q = 4.63 \times 10^6 J$

Explanation:

As we know that melting point of silver is

T = 961.8 degree C

Latent heat of fusion of silver is given as

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now we will have

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