hathinaina00
hathinaina00 hathinaina00
  • 30-05-2021
  • Physics
contestada

What is the magnification when an object is placed at 2f from the pole of the convex mirror? 

-2/ 3

-3/2

-1

-1/3​

Respuesta :

PiaDeveau PiaDeveau
  • 04-06-2021

Answer:

Linear magnification = 1/3

Explanation:

Given:

Convex mirror

Object's distance from pole = 2f

Find:

Linear magnification

Computation:

Object distance, u = −2f

So,

1/v + 1/u = 1/f

1/v + 1/(-2f) = 1/f

1/v = 1/f + 1/2f

BY taking LCM

1/v = 3 / 2f

v = 2f / 3

Magnification, M = -v / u

So,

Magnification, M = (2f / 3) / 2f

Magnification, M = 2f / 6f

Magnification, M = 2 / 6

Linear magnification = 1/3

 

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