Lightbulbs?

0 ⤊

The lightbulb in a headlight, flashlight, or spotlight is placed at the focal point of a

a concave lens.
b convex lens.
c concave mirror.
d. convex mirror.

2007-02-21 11:09:24 · 4 answers · asked by thedogman b 1 in Science & Mathematics ➔ Engineering

4 answers

Concave mirror. This means that the light emitted radially from the bulb is reflected out in a parallel beam.

2007-02-21 11:13:16 · answer #1 · answered by davidbgreensmith 4 · 0⤊ 1⤋

c. concave mirror. The first answer is wrong because not all concave mirrors result in parallel beams. Only a parabolic mirror does.

2007-02-21 12:46:22 · answer #2 · answered by STEVEN F 7 · 0⤊ 0⤋

c. concave mirror

2007-02-25 03:13:29 · answer #3 · answered by charly 3 · 0⤊ 0⤋

Military Grade Tactical Flashlight - http://FlashLight.uzaev.com/?dCMM

2016-07-11 08:12:35 · answer #4 · answered by ? 3 · 0⤊ 0⤋