The normal human eye can detect colors whose wavelengths range from 380 nm to about
A. 600 nm.
B. 650 nm.
C. 700 nm.
D. 550 nm.
Answer: C
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An LR circuit is prepared for an experiment, initially with its switch open. The time constant is that time after switch closure at which the current reaches what percentage of its final value
A. 100% B. 90% C. 37% D. 63% E. 50%
The period-luminosity relationship is primarily used for main sequence stars
Indicate whether the statement is true or false
A waxing crescent Moon is visible
a. near the eastern horizon just before sunrise. b. near the eastern horizon just after sunset. c. near the western horizon just before sunrise. d. near the western horizon just after sunset. e. from sunset until sunrise.
Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°
What is the wavelength of the incident light? A) 202 nm B) 806 nm C) 452 nm D) 403 nm E) 605 nm