Question

Answer this
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Answer 1

Explanation:

(8)(12)+16−2−10

=96+16−2−10

=112−2−10

=110−10

Answer 2

Answer: Hope my answer helps u :)

f = -18 cm

u = -24 cm

by mirror formula:

1/v = 1/f - 1/u=-1/72

v = -72 cm

The screen should be placed 72 cm away from the pole.

if object is moved by 3 cm.

Then, u = -21 cm

By mirror formula,

1/v = 1/f - 1/u = -1/126

New v = -126 cm

Therefore, the screen should be moved by 54 cm away from the pole.

Explanation:

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