Answer:
AnSwEr iS BeLoW
Explanation:
Well according to https://van.physics.
The headlamp's concave mirror is open on one end, and the light bulb's filament is placed at or near the focus. Parallel ight rays, if they were coming into the headlamp from outside (say, the driver is driving his car in the direction of the setting sun), would converge near the filament of the light bulb
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When a light bulb is placed at focus , the head lamp as a concave mirror will produce a narrow beam.
Concave mirror is the spherical part of mirror which is painted from outside and the ray falling on this mirror forms a real image.
The concave mirror of headlamp is open on one end, and the bulb filament is placed at the focus. Parallel ight rays from outside will converge to form a narrow beam near the filament of the light bulb.
Thus, When a light bulb is placed at focus , the head lamp as a concave mirror will produce a narrow beam.
Learn more about concave mirror.
https://brainly.com/question/3555871
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