Question

One half of a convex lens of focal length 10 cm is covered with a black paper. Can such lens produce an image of a complete object placed at a distance of 30 cm from the lens? Draw ray diagram to justify your answer .....plzz ans properly plzz

Answer 1

A convex lens can produce the complete image of the object even though half of the lens is covered. This is because light coming from the object can be refracted from the other half of the lens. However, the intensity of light will be reduced.


Refer the attachment for ray diagram

GIVEN:-

:- height of object=4cm=h0
:-focal length=f=20cm
:-u= -15cm after sign convention
:-by using lens formula
1/f=1/v-1/u

1/v=1/f+1/u
=1/20-1/15=3-4/60
=-1/60
v=-60cm

m=v/u
m=hi/ho
=v/u
hi=ho*v/u
=4*(-60)/(-15)=8cm
hi=8cm
:- position of image is 60cm in front of the lens
:-size of image is 8cm
:-nature of image is virtual and erect.


hope it helps you
plz mark as branliest.

Answer 2

hi!
A convex lens can produce the complete image of the object even though half of the lens is covered.  However, the intensity of light will be reduced.