A concave mirror has a focal length of 77.0 cm. (a) What is its radius of curvat

Question

A concave mirror has a focal length of 77.0 cm.

(a) What is its radius of curvature?______________cm

(b) Locate the image when the object distance is 100 cm. (Indicate the side of the mirror with the sign of your answer.)________________cm

(c) Locate the image when the object distance is 10.0 cm. (Indicate the side of the mirror with the sign of your answer.)______________cm

Describe the properties of the image when the object distance is 10.0 cm. (Select all that apply.)

__real

__virtual

__upright

__inverted

Please be very clear and simple in answers show step by step plz

Explanation / Answer

part a )

f = R/2

R = 2f

R = 2 * 77 = 154 cm

part b )

using mirror equation

1/u + 1/v = 1/f

u = object distance

v = image distance

1/v = 1/f - 1/u

1/v = (1/77)- (1/100)

v = 334.78 cm

part c )

now u = 10 cm

v = -114.925 cm

part d )

image is virtual , upright

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