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aev [14]
3 years ago
8

Which type of electromagnetic radiation cannot be focused?

Physics
2 answers:
Irina18 [472]3 years ago
7 0
The answer is A. Hope this helps. :)
dalvyx [7]3 years ago
5 0

(A)  Gamma rays

Focussing is a process in which a beam of light is passed and concentrated on the particular point.

Gamma rays are the type of elecromagnetic radiation that cannot of focused. Gamma rays has high frequency and also are quite energetic due to which when the beam of light is passed through it, it becomes too difficult to focus on a particular point as they interacts strongly with the matter and destroys itself. Hence, Gamma rays are not easily focused.

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Answer:

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Given that,

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Using thermodynamics first equation

dU=Q-W...(I)

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Put the value of W in equation (I)

dU=Q-PdV

Where, W = PdV

Put the value in the equation

dU=-1.95\times10^{4}-(4.63\times10^{4}\times3.14\times(0.272)^2\times(-0.163))

dU=-17746.78\ J

Hence, The change in internal energy of the system is -17746.78 J

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Before the start of a trip, air in a tire is at 320 kPa gage pressure and 27°C temperature. At the end of the trip the tire pres
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