Question

2. A converging (concave) mirror with a focal length of 7 cm is held 4 cm from your face.
a. Determine the image location.
Insert your solution here:
b. What is the magnification of the image?
Insert your solution here:​

Answer 1

Answer:

f=focal length=(-7)

because concave mirror

u=-4

v=?

1/f =1/v +1/u

1/-7 = 1/v + 1/-4

-1/7=1/v -1/4

1/v= -1/7 + 1/4

1/v = (-4+7)/28

1/v=3/28

by cross multiplication

v=28/3

=

image location =28/3cm behind the mirror

magnification= -v/u

-28/3 ÷(- 4)

-28/3×1/-4

7/3

magnification=2.33cm

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