An object is placed on axis in front of a positive lens. The lens has f = 6.41 c

Question

An object is placed on axis in front of a positive lens. The lens has f = 6.41 cm. The object is located at do = 11.9 cm and is 7.19 mm high. Is the image real, virtual or undetermined?

Expressing your answer as a non-negative number, what is the height of the image?

An object is placed on axis in front of a positive lens. The lens has f 6.41 cm. The object is located at do 311.9 cm and is 7.19 mm high. ls the image real, virtual or undetermined? O Virtual Real O Cannot be determined Expressing your answer as a non-negative number, what is the height of the image? Number mm ls the image upright, inverted or u determined with respect to the object? O Upright O Cannot be determined O Inverted O Previous Check Answer Next Ext A Hint

Explanation / Answer

part a )

1/u + 1/v = 1/f

u = 11.9 cm

f = 6.41 cm

1/v = 1/f - 1/u

v = 13.90 cm

image is real

part b )

m = -v/u = hi/ho

-13.90/11.9 = hi/7.19

hi = 8.39mm

part c)

inverted

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