A light ray is incident on the surface of water (n = 1.33) at an angle of 60° relative to the normal to the surface. The angle of the reflected wave is
a. 80°.
b. 40°.
c. 20°.
d. 60°.
e. 30°.
d
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Active galaxies are the result of galactic _______________
Fill in the blank(s) with correct word
We observe a planet crossing in front of its host star and the planet is smaller than the star. We call this crossing motion a ____________
Fill in the blank(s) with correct word
A 12-L volume of oil is subjected to pressure which produces a volume strain of -3.0 × 10-4. The bulk modulus of the oil is 6.0 × 109 Pa and is independent of the pressure. The change in the pressure of the oil in megapascals is closest to
A) 1.6 MPa. B) 1.8 MPa. C) 1.4 MPa. D) 1.2 MPa. E) 2.0 MPa.
Consider two diffraction gratings with the same slit separation, the only difference being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated with a beam of the same monochromatic light
A) the grating with 3 slits produces the greater separation between orders. B) the grating with 4 slits produces the greater separation between orders. C) both gratings produce the same separation between orders. D) both gratings produce the same separation between orders, but the orders are better defined with the 4-slit grating.