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Kaylis [27]
3 years ago
7

A small black spot is present on the metal plate and if the metal plate is heated to red hot and quickly placed in a dark room t

hen the spot will appear white while the plate appears black. The spot is white because its a perfect black body and is heated, but why does the plate appear black? Why not red?
Physics
1 answer:
guapka [62]3 years ago
8 0

this has something to do with black body radiation and absorption

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This problem has been solved!
lana66690 [7]

Answer:

Charge on each metal sphere will be 8\times 10^{8}C

Explanation:

We have given number of electron added to metal sphere A n=10^{12}electron

As both the spheres are connected by rod so half -half electron will be distributed on both the spheres.

So electron on both the spheres =\frac{10^{12}}{2}=5\times 10^{11}electron

We know that charge on each electron e=1.6\times 10^{-19}C

So charge on both the spheres will be equal to q=1.6\times 10^{-19}\times 5\times 10^{11}=8\times 10^{8}C

So charge on each metal sphere will be equal to 8\times 10^{8}C

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