Question

Aconcave lens and a convex lens of same focal length 10 cm are separated by 24 cm. A point size object is placed in front of concave lens at 15 cm. Distance between object and final image is O 15 cm 24 cm h

Answer 1

Answer:

I hope it's helpfull

Explanation:

☆ Given: h 1 =3cm;u=−14cm;f=−21cm

By lens formula,

{v1− u1 = f1v1−

−141= −211v=−8.4cm}

Now, Magnification formula for lens,

{m= hh = uv

h2= 148.4×3

⇒h 2 =1.8cm}

If the object is moved further away from the lens, the image will continue to move towards the lens and the size of the image will decrease with an increase in the distance.