Edexcel GCS Physics Unit 2: Physics as work Section A examples

I have used the June 2011 paper to make some statements for section A. I hope these help.

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  • Created by: Jonathan
  • Created on: 23-05-12 10:48

1.

When light hits the boundry between mediums it will either reflect or refract (bend towards the normal).

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2.

Internal resistance can be found by taking the magnitude of the gradient of a Current (x-axis) Potential difference (y-axis).

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3.

At two points seperated by half of a wave lenght the displacement is in opposite direction to each other.

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4.

An ultraviolet photon has more energy than an infrared photon.

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5.

When the temperature decreases on a negative temperature coefficient thermistor the ammeter reading will decrease.

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6.

Potential difference (v) can be writen as J A-1 s-1.

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7.

When two wave crests meet, the aplitude is equal to the sum of the aplitudes of both waves.

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8.

When a wave is diffracted as it passes through an opening in a barrier. The amount of diffraction that the wave undergoes depends on both the wavelenght of the incident wave and the size of the opening.

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9.

The cross-sectional area of wire X is twice that of Y. The drift velocities of the electrons in these can be represended as vx and vy. The value of vx/vy is equal to 1/2.

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10.

Diffraction of light passiing through a narrow opening provides evidence that light has a wave nature.

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