Unlike the refracting astronomical telescope discussed in the text that gives an inverted image, Galileo's telescope produced an upright image. What did he do differently to accomplish this?
a. He rotated the barrel of the telescope 180°.
b. He used diverging lenses for both the eyepiece and the objective.
c. He used a diverging lens for the eyepiece.
d. He used a diverging lens for the objective.
C
You might also like to view...
Nuclear Fission and Fusion: The main fuel for producing energy in the center of the sun is
A. helium. B. hydrogen. C. uranium. D. any radioactive material. E. oxygen.
The Q of a nuclear reaction is equal to:
a. the total charge involved. b. energy associated with the change in mass. c. energy associated with momentum conservation. d. the exothermic endothermy.
For safety in climbing, a mountaineer uses a 50-m long nylon rope that is 1.0 cm in diameter. When supporting a 90-kg climber, the rope elongates 1.6 m. Find the Young's modulus for the rope material
Reactance: A pure capacitor is connected to an ac power supply. In this circuit, the current
A. leads the voltage by 90°. B. lags the voltage by 90°. C. lags the voltage by 180°. D. is in phase with the voltage. E. None of the given answers are correct.