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Reflection, Refraction and Diffraction Flashcards

(12 cards)

1
Q

When the size of the gap is much larger than the wavelength of the waves, is the diffraction large or small?

A

Small

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2
Q

When the size of the wavelength is much smaller than the size of the gap, is the diffraction large or small?

A

Small

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3
Q

Which part of the electromagnetic spectrum will diffract most around a mountain?

A

Radio waves

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4
Q

Which will diffract least around a hill, short wavelength radio or long wavelength radio waves?

A

Short wavelength radio

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5
Q

How does the angle of incidence compare to the angle of reflection?

A

Angle of incidence = Angle of reflection

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6
Q

The angle of incidence is measured between which two lines?

A

Ray of incident light and the normal line

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7
Q

When light travels from air to glass, the speed of light does what?

A

Slows down

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8
Q

When light travels from air to glass, how does the angle of incidence compare to the angle of refraction?

A

Angle of refraction is less than the angle of incidence

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9
Q

When light travels from glass to air, how does the angle of incidence compare to the angle of refraction?

A

Angle of incidence is less than the angle of refraction

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10
Q

When white light refracts through a prism, which colour refracts the most?

A

Violet

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11
Q

Name the colours of the spectrum starting with the longest wavelength colour.

A

Red, Orange, Yellow, Green, Blue, Indigo, Violet

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12
Q

State what is meant by the term refraction.

A

The change in speed of light as it moves from one medium to another.

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