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  • 24-11-2020
  • Physics
contestada

ned
An object is placed (90 cm) from a convex lens whose focal length is
(30cm). What is the image position (xi)?

Respuesta :

lucic
lucic lucic
  • 24-11-2020

Answer:

45 cm

Explanation:

The formula to apply in this question is that of object distance , image distance and focal length.

This is written as;

[tex]\frac{1}{f} =\frac{1}{o} +\frac{1}{v}[/tex]

where;

f= focal length = 30cm

o= object distance = 90 cm

v= image distance = ?

Applying real values as;

1/30 = 1/90 + 1/v

1/30 - 1/90 = 1/v

1/45 = 1/v

v= 45 cm

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