Saturn's upper atmosphere has an apparent helium surplus
Indicate whether the statement is true or false
FALSE
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The electric field is continuous
Indicate whether the statement is true or false
The image of an object beneath the surface of a medium of refractive index n > 1 is seen in air by a person looking down on the surface. This image, formed by light rays leaving the flat refractive surface, is
a. real and closer to the viewer than the object. b. virtual and closer to the viewer than the object. c. real and farther from the viewer than the object. d. virtual and farther from the viewer than the object. e. virtual and the same distance from the viewer as the object.
What is the critical angle?
a. The angle of incidence below which total internal reflection takes place. b. The smallest angle of incidence that is greater than its angle of reflection. c. The angle of incidence above which total internal reflection takes place. d. The angle of incidence that equals its angle of refraction. e. The angle at which light enters a new material.
The warming of the lower atmosphere (the greenhouse effect) results from the
A) absorption of long-wave solar radiation. B) reflection of long-wave terrestrial radiation. C) absorption of long-wave terrestrial radiation by atmospheric gases. D) release of atmospheric gases into the ozone layer.