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Bad White [126]
3 years ago
12

State the conservation of momentum theorem

Physics
1 answer:
Luda [366]3 years ago
7 0

Answer:

The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.

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An object 2cm high is placed 3cm in front of a concave lens of focal length 2cm, find the magnification?​
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Answer:

0.4

Explanation:

A concave lens is a diverging lens, so it will always have a negative focal length. Image distance is always negative for a concave lens because it forms virtual images.

From the lens formula;

1/f = 1/u+ 1/v

- 1/2 = 1/3 - 1/v

1/v = 1/3 + 1/2

v= 6/5

v= 1.2 cm

Magnification = image distance/object distance

Magnification = 1.2cm/3cm

Magnification = 0.4

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