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PHS1002 Physics for Engineering - Malaysia S1 2025
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Question 1 (cont.)
(b) Calculate the work function (in eV) of the metal used in the experiment.
Question 1
The stopping voltage is plotted versus the frequency of the incident light in a photoelectric experiment. The straight line, which connects the data points, intersects the frequency axis at 7.2 x 1014 Hz.
(a) The slope of the straight line is
)
What is the intensity of the light transmitted
by the third Polaroid?
(c)
The light transmitted by the third Polaroid is(b)
The light transmitted by the second Polaroid isThere are 3 Polaroids in a row as shown in Figure 2. The transmission axis (dotted line) of the first Polaroid is vertical, that of the second Polaroid is 45 degree from the vertical, and that of the third Polaroid is horizontal. Unpolarized light of intensity I0 is incident on the first Polaroid.
(a) The light transmitted by the first Polaroid is
What
is the intensity of sunlight on Mars?
What
is the average power output of the sun?
The intensity
of sunlight reaching earth is 1360 W/m
2. Assume sunlight is a sinusoidal
spherical EM wave. The distance
from the sun to earth is 1.50 x 10
11m. The distance from the sun to Mars is
2.28 x 10
11 m.(a) What is the electric field amplitude of sunlight on earth?
Calculate the radiation force on the
mirror.