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4 years ago

Use the drop-down menus to match each phrase below with the type of microscope it describes.

Biology

1 answer:

Contact [7]4 years ago

4 0

Answers:

- magnifies objects in steps: Compound light microscope

- is the type that was used to observe the first strands of DNA: Electron microscope

- contains a series of lenses: Optical microscope

- includes magnifying glasses: Compound light microscope

- creates a digital image: Electron microscope

- uses one lens for magnification: Simple microscope

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Answer:

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Explanation:

Since, root mean square speed of a molecule,

$V_{rms}=\sqrt{\frac{3kT}{m}}$

Where,

k = Boltzmann constant,

T = temperature of gas,

m = mass of molecule,

Also, the temperature of a gas,

$T=\frac{pV}{nR}$

Where,

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$\implies V_{rms}=\sqrt{\frac{3kpV}{mnR}}$

If V = 2V and p = 2P

Then,

$V_{rms}=\sqrt{\frac{12kpV}{mnR}$

$=2\sqrt{\frac{3kpV}{mnR}$

Hence, if rms speed of a gas molecule under initial conditions is v then rms speed of a molecule will be 2v

i.e. option d is correct.

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