True and False Consider diffraction in a ripple tank from two narrow slits. Answ

Question

True and False

Consider diffraction in a ripple tank from two narrow slits. Answer true (T) or false (F) for each of the following statements. E.g., if the first statement is true and the rest false, enter TFFF.

a) If the frequency of the wave source is doubled, then the phase speed of the waves doubles.

b) If the frequency of the wave source is doubled, then the angle between the zeroth and first order fringes is halved.

c) If the distance between the slits is doubled, then the angle between the zeroth and first order fringes is doubled.

d) If the frequency of the source and the space between the slits are both doubled, then the angle between the zeroth and first order fringes is quartered.

part 2: Which of the following statements are correct: (Give ALL correct answers, in alphabetical order, e.g., DEF)

e) A concave mirror always forms a virtual image of a real object.
f) The image produced by a convex mirror is always closer to the mirror than it would be in a plane mirror for the same object distance.
g) A concave mirror always forms an enlarged real image of a real object.
h) When the object of a concave mirror is outside the focal point, the image is real.
E) A virtual image formed by a concave mirror is always enlarged.

Explanation / Answer

e)

False

f)

True

g)

False

h)

True

E)

True

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