Question 7 of 8 a Sapling Learning macmillan learning You are given a spherical

Question

Question 7 of 8 a Sapling Learning macmillan learning You are given a spherical mirror and wish to determine its properties. You place an object on its axis, 32.3 cm in front of it, and discover that the mirror creates a virtual image located 17.3 cm from the mirror. Find the mirror's focal length. Number cm |Dom milculate the mirror's radius of curvature. Number cm cm If it can be determined, is the mirror concave or convex? O Cannot be determined Concave O Convex O Previous & Give Up & View Solution o Check Answer Next Exit ? Hint

Explanation / Answer

object distance, p = 32.3 cm

for virtual image, q = - 17.3 cm

1/f = 1/p + 1/q

1/f = 1/32.3 - 1/17.3

f = - 37.25 cm .......Ans

R = 2f = 74.5 cm .......Ans

f is negative so mirror is convex.

Ans: Convex

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