4 years ago

In most cases, what happens to a liquid when it cools?

Physics

1 answer:

erik [133]4 years ago

7 0

Answer:

Option (A) and (F)

Explanation:

As the liquid cools down, it means the temperature decreases the density of the liquid increases in most o the cases.

Now the volume is inversely proportional to the density of substance so density increases.

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Answer:

Wavelength = 0.15 nm

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We have given photon energy E = 8 KeV = 8000 eV

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So $8000eV=1.6\times 8000\times 10^{-19}=12800\times 10^{-19}j$

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We know that photon energy is given by $E=h\nu$

So $12800\times 10^{-19}=6.6\times 10^{-34}\nu$

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