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# If the Object is Moved to a Point Only 3 Cm Away from the Lens, What is the New Position, Height and Nature of the Image? - CBSE Class 10 - Science

ConceptRefraction of Light Image Formation by Lenses - Convex Lens

#### Question

If the object is moved to a point only 3 cm away from the lens, what is the new position, height and nature of the image?

#### Solution

Object distance (u) =-3

1/f=1/v-1/u

1/8=1/v-1/-3

1/8=1/v+1/3

1/8-1/3=1/v

(3-8)/24=1/v

-5/24=1/

v=-24/5

v=-4.8cm

The image will be at a distance of 4.8 cm in front of the lens.

Magnification (m) v/u

m=(-4.8)/-3

m=1.6

Positive value of magnifiction shows that the image is virtual and erect.

m=h_i/h_o

1.6=h_i/3

h_i=3xx1.6=4.8` cm

positive sign of the image shows that the image will be formed above the principal axis.

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Solution If the Object is Moved to a Point Only 3 Cm Away from the Lens, What is the New Position, Height and Nature of the Image? Concept: Refraction of Light - Image Formation by Lenses - Convex Lens.
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