Question

Part A Find the two locations where an object can be placed in front of a concave mirror with a radius of curvature of 46.0 em such that its image is twice its size. Express your answers using two significant figures. Enter your answers numerically separated by a comma. 190 AED dos dos Submit Request Answer Parts In the case when the object is placed closer to the mirror, state whether the image is real or v upright or inverted

Answer 1

if magnification

m = - 2

v1/u1 = - 2

v = - 2 u1

using mirror formula

1/f = 1/v1 + 1/u1

- 2/46 = - 1/2u1 - 1/u1

u1 = 34.5 cm ===>> Ans

2nd case if magnification = +2

v2 = 2 u2

as per mirror formula

- 2/46 = 1/2u2 - 1/u2

u2 = 11.5 cm ==>> Ans

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u1 => real and inverted image

u2 => Virtual and upright image.

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