ss Tracker. Score an amber for most questions correct, or a green for all correct.1A student uses a triangular glass prism to separate a beam of white light into the colours of the visible spectrum. She observes the spectrum produced on a screen which has been placed on the far side of the prism. Which of the colours is refracted by the smallest amount?YellowRedVioletGreen2Convert one nanometre (1 nm) to metres.10-3 m10-12 m10-6 m10-9 m3What name is given to the type of reflection which occurs when light is incident onto a smooth, polished surface (such as a mirror)?Special reflectionStandard reflectionSpecular reflectionSmooth reflection4Which of the following does NOT occur during diffuse reflection?Parallel rays of light which strike the surface are reflected at random anglesLight is incident onto a rough surfaceThe Law of Reflection is not obeyedAn image is not formed5What colour will a green pear appear to be when viewed through a blue colour filter? The pear is being illuminated by white light.YellowBlackGreenBlue6Why does a sheet of yellow paper appear yellow when illuminated with white light?It reflects the other colours in the visible spectrum effectivelyIt transmits the other colours in the visible spectrum effectivelyIt absorbs yellow light effectivelyIt reflects yellow light effectively
Question
ss Tracker. Score an amber for most questions correct, or a green for all correct.1A student uses a triangular glass prism to separate a beam of white light into the colours of the visible spectrum. She observes the spectrum produced on a screen which has been placed on the far side of the prism. Which of the colours is refracted by the smallest amount?YellowRedVioletGreen2Convert one nanometre (1 nm) to metres.10-3 m10-12 m10-6 m10-9 m3What name is given to the type of reflection which occurs when light is incident onto a smooth, polished surface (such as a mirror)?Special reflectionStandard reflectionSpecular reflectionSmooth reflection4Which of the following does NOT occur during diffuse reflection?Parallel rays of light which strike the surface are reflected at random anglesLight is incident onto a rough surfaceThe Law of Reflection is not obeyedAn image is not formed5What colour will a green pear appear to be when viewed through a blue colour filter? The pear is being illuminated by white light.YellowBlackGreenBlue6Why does a sheet of yellow paper appear yellow when illuminated with white light?It reflects the other colours in the visible spectrum effectivelyIt transmits the other colours in the visible spectrum effectivelyIt absorbs yellow light effectivelyIt reflects yellow light effectively
Solution
Sure, here are the answers to your questions:
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Red is the color that is refracted by the smallest amount. This is because red light has the longest wavelength and is bent the least by the prism.
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One nanometer (1 nm) is equal to 10^-9 meters.
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The type of reflection which occurs when light is incident onto a smooth, polished surface (such as a mirror) is called specular reflection.
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During diffuse reflection, an image is not formed. This is because the light rays are scattered in many different directions.
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A green pear will appear to be black when viewed through a blue color filter. This is because the filter only allows blue light to pass through, and a green object does not reflect or emit blue light.
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A sheet of yellow paper appears yellow when illuminated with white light because it reflects yellow light effectively. The other colors in the spectrum are absorbed by the paper, so we only see the reflected yellow light.
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