___ A student performs an experiment similar to Young\'s Double Slit Experiment.
ID: 1620255 • Letter: #
Question
___ A student performs an experiment similar to Young's Double Slit Experiment. Coherent light passes through two narrow slits and produces a pattern of alternating bright and dark lines on a screen. Which of the following would cause the bright lines on the screen to be further apart? I. Increasing the distance between the slits II. Decreasing the distance between the slits III. Decreasing the wavelength of the light A) I only B) II only C) III only D) I & III only E) II & III only ___ Light traveling from medium 1 undergoes total internal reflection at the boundary to medium 2. What can be said about the velocity of light in medium 1, v_1, compared to the velocity of light in medium 2, v_2? a) v_1 > c b) v_1 > v_2 c) v_1 = v_2 d) v_1Explanation / Answer
9.
Electrostatic force is given by:
F = kq1q2/r^2
So,
F = 9*10^9*2*(-8)*10^-8/12^2
F = -10 N
Correct option is D.
10.
V1 = kq1/r1
when r1 = 1, V1 = kq1/1
V1 = k*q1 = V
when r1 = 2
V2 = kq1/2 = V/2
V2 = 0.5*V
Correct option is B.
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