Solve the following problems using the lens equation and magnification equation;

Question

Solve the following problems using the lens equation and magnification equation; correct work worth 2 points; correct answers worth 1 point A 1.5 cm tall candle stands 6 cm in front of a 15 cm focal distance diverging lens. where is the location of the image? what is the size of the image? is the image real or virtual? A 2.5 cm tall candle stands 18 cm in front of a 12 cm focal distance diverging lens. what is the location of the image? what is the magnification of the image. is the image upright or inverted?

Explanation / Answer

a)

here by using the formula

1 / f = 1 / v - 1 / u

v = 1 / ( 1 / f + 1 / u )

v = 1 / ( 1 / -15 + 1 / -6)

v = -4.28 cm

b)

h2 / h1 = m = v / u

h2 = v * h1 / u

h2 = 4.28 * 1.5 / 6

h2 = 1.07 cm

c)

the image is virtual

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