In a Young's double-slit interference apparatus, the distance from the slits to the screen is tripled. The distance between adjacent light and dark fringes changes by a factor of:
a. 1/3.
c. 3.
b. 1.
d. 1/9.
C
Physics & Space Science
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A lamp rated at 120W 120V has a filament resistance of
A) 1 ohm. B) 60 ohms. C) 100 ohms. D) 144 ohms. E) none of the above
Physics & Space Science
The region in which charged particles are trapped by our magnetic fields is the
A) Aurora. B) ozone layers. C) Van Allen radiation belt. D) exosphere. E) ionosphere.
Physics & Space Science
A helium-neon laser (? = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 20.5°, what is the line spacing, d?
a. 1.81 × 10^?6 m b. 1.00 × 10^?5 m c. 1.00 × 10^?4 m d. 1.31 × 10^?6 m e. 6.76 × 10^?7 m
Physics & Space Science
Shallow Landslides
What will be an ideal response?
Physics & Space Science