1) An object is located 50.0 cm away from a concave mirror, which has a focal le

ID: 1381714 • Letter: 1

Question

1) An object is located 50.0 cm away from a concave mirror, which has a focal length of 10.0 cm. How far is the image from the mirror?

20 cm

25 cm

10 cm

12.5 cm

2) When you comb your hair in the morning and look in the mirror, the image is...

Upright and real

Upside down and virtual

Upside down and real

Upright and virtual

3) Parallel rays of light from infinity that hit a concave mirror will come together

at a point half way to the focal point

at infinity

at the center of curvature

at the focal point

Thank you

Number 1)

Apply 1/f = 1/p + 1/q

1/10 = 1/50 + 1/q

q = 12.5 cm (The last choice)

Number 2)

Upright and virtual. (The last choice)

You see yourself as normal, so that it upright and since you see yourself "IN" the mirror, that is a virtual image.

Number 3)

Light rays from infinity form at the focal point (The last choice)

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