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o-na [289]
3 years ago
5

A ball is thrown upward.

Physics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer:

It is 10.75

Explanation:

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You place a light bulb 8 cm in front of a concave mirror. You then move a sheet of paper back and forth in front of the mirror.
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sorry - late reply...just stumbled across tis...hope u can still use it :)


By the mirror equation: 1/di + 1/do = 1/f

<span>
</span>

<span>where di = distance to image = +12cm (+ for real image)</span>


and do = distance to object = +8cm


Substitute and solve for f, the focal length

<span><span>
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1/f = (8 + 12) / 12 * 8 = 20/96
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so f = 96/20 = 4.8 cm</span>
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Tu mujhe banaye ga face dekh aapna mirror me

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