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3 years ago

1 point

Physics

1 answer:

Trava [24]3 years ago

5 0

Answer:

Their number should increase

Explanation:

The photoelectric effect is a phenomenon that causes the ejection of electrons from that metal as light shined onto a metal surface. Only certain frequencies of light can cause the ejection of electrons. However, if the frequency of the incident light is too low then no electrons were ejected even if the intensity of the light was very high. If the frequency of the light was higher then electrons were able to be ejected from the metal surface even if the intensity of the light was very low.

According to the accepted wave theory, light of any frequency will cause electrons to be emitted. Kinetic energy emitted by the electrons depends upon the intensity of light.

According to the accepted wave theory, number of electrons being ejected by the metal should increase

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1) Magnitude of the force:

The magnetic field generated by a current-carrying wire is
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where
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I is the current in the wire
r is the distance at which the field is calculated

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$r=40.0 cm=0.40 m$ ,
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Then we can calculate the magnitude of the force exerted on each wire by this magnetic field, which is given by:
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2) direction of the force:
The two currents run in opposite direction: this means that the force between them is repulsive. This can be determined by using the right hand rule. Let's apply it to one of the two wires, assuming they are in the horizontal plane, and assuming that the current in the wire on the right is directed northwards:
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Now let's apply the right-hand rule to the wire on the right:
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A similar procedure can be used on the wire on the left, finding that the force exerted on it is directed westwards, so the force between the two wires is repulsive.

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