Fundamentals of Physics Study Set 2

Physics & Astronomy

Quiz 36 :
Diffraction

Quiz 36 :
Diffraction

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Sound differs from light in that sound:
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Answer:

D

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Radio waves are readily diffracted around buildings whereas light waves are negligibly diffracted around buildings.This is because radio waves:
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Answer:

B

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Diffraction plays an important role in which of the following phenomena?
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Answer:

C

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The rainbow seen after a rain shower is caused by:
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When a highly coherent beam of light is directed against a very fine wire, the shadow formed behind it is not just that of a single wire but rather looks like the shadow of several parallel wires.The explanation of this involves:
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When the atmosphere is not quite clear, one may sometimes see colored circles concentric with the Sun or the Moon.These are generally not more than a few diameters of the Sun or Moon and invariably the innermost ring is blue.The explanation for these phenomena involves:
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The shimmering or wavy lines that can often be seen near the ground on a hot day are due to:
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In order to obtain a single-slit diffraction pattern with a central maximum and several secondary maxima, the slit width could be:
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A point source of monochromatic light is placed in front of a soccer ball and a screen is placed behind the ball.The light intensity pattern on the screen is best described as:
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At the first minimum adjacent to the central maximum of a single-slit diffraction pattern the phase difference between the Huygens wavelet from the top of the slit and the wavelet from the midpoint of the slit is:
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At the second minimum adjacent to the central maximum of a single-slit diffraction pattern the Huygens wavelet from the top of the slit is 180 out of phase with the wavelet from:
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A plane wave with a wavelength of 500 nm is incident normally on a single slit with a width of 5.0 10-6 m.Consider waves that reach a point on a far-away screen such that rays from the slit make an angle of 1.0 with the normal.The difference in phase for waves from the top and bottom of the slit is:
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In the equation sin= /a for single-slit diffraction, is:
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No fringes are seen in a single-slit diffraction pattern if:
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The diagram shows a single slit with the direction to a point P on a distant screen (not shown).At P, the pattern has its second minimum (from its central maximum).If X and Y are the edges of the slit, what is the path length difference (PX)- (PY)? img
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The diagram shows a single slit with the direction to a point P on a distant screen (not shown).At P, the pattern has its maximum nearest the central maximum.If X and Y are the edges of the slit, what is the path length difference (PX)- (PY)? img
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Consider a single-slit diffraction pattern caused by a slit of width a.There is a minimum at sinequal to:
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Monochromatic plane waves of light are incident normally on a single slit.Which one of the five figures below most correctly shows the diffraction pattern observed on a distant screen? img
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A student wishes to produce a single-slit diffraction pattern in a ripple tank experiment.He considers the following parameters: img Which two of the above should be decreased to produce more bending?
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A parallel beam of monochromatic light is incident on a slit of width 2 cm.The light passing through the slit falls on a screen 2 m away.As the slit width is decreased:
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