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Physics

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Lia Ruecker

Lvl 10
3y ago
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Cards in this guide (9)
Which factor most influences the image produced by reflection of an object in a concave mirror

distance from mirror

Which material lines the tubes of fluorescent lights and glows when exposed to UV light

Phosphor.

Which term indicates the imaginary line that extends straight out from the center of a reflective surface

The imaginary line that extends straight out from the center of a reflective surface is the optical axis.

Which of the following is true of a real image

it can be projected

Which term is used to describe objects that are visible because of reflected light

illuminated

Thats the right answer for a plus.

V-cube 7 or megaminx

megaminx

What is true about convex mirrors

Convex mirrors project a hemispherical surface

Which of the following is true of sound waves

sound waves require a medium to transfer energy

FOR A+ USERS THE ANSWER IS Sound waves travel in all directions
sound waves require a medium to transfer energy

-- They are longitudinal waves and material medium is required for their propagation.

What type of device is used to increase or decrease the voltage of an electric current

The device is called a "variac' and it is a type of transformer. It has a variable voltage ouput.

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