Name the four types of reflector designs
What will be an ideal response?
prime focus, Newtonian, Cassegrain, and Coude
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The current drawn by a 1200-W toaster connected to 120 V is 10 A. The resistance of the toaster coils is
A) 6 ohms. B) 12 ohms. C) 18 ohms. D) none of the above
Inside an accelerating spaceship far from gravitational influences, a flashlight beam will
A) not bend. B) curve as it would in a gravitational field equal to the acceleration of the spaceship. C) follow a semi-circular path.
A beam of light of two different wavelengths enters a pane of glass 3.00 mm thick at an angle of incidence of 56°. The indices of refraction for the two different colors are 1.514 and 1.528
Because of dispersion, the colored beams, although parallel, are separated by a small distance. How far apart are they? A) 0.057 mm B) 0.0083 mm C) 0.025 mm D) 0.014 mm E) 0.0062 mm
A 10-? resistor is in series with a 100-?F capacitor at 120 Hz. What is the phase angle?
A) -37° B) -82° C) +37° D) -53° E) -4.7°