A concave spherical mirror has a radius of curvature of 9.00 cm . 1)Calculate th

Question

A concave spherical mirror has a radius of curvature of 9.00 cm .    1)Calculate the location of the image formed by an 8.00 mm -tall object whose distance from the mirror is 18.0 cm .    

2) Calculate the location of the image formed by an 8.00 mm -tall object whose distance from the mirror is 9.00 cm .

3) Calculate the location of the image formed by an 8.00 mm -tall object whose distance from the mirror is 2.25 cm .

4) Calculate the location of the image formed by an 8.00 mm -tall object whose distance from the mirror is 10.0 m .

Explanation / Answer

here f = R/2 = 9/2 = 4.5 cm

1/f = 1/v + 1/u

1/v = 1/f - 1/u

1) 1/v = (-1/4.5) - (1/18)

v = -3.6 cm

2) 1/v = (-1/4.5) - (1/9)

v = - 3 cm

3) 1/v = (-1/4.5) - (1/2.25)

v = - 1.5 cm

4) 1/v = (-1/4.5) - (1/1000)

v = -4.47 cm

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