An object 2.4 m in front of a lens forms a sharp image on a film 12 cm behind lens . a glass plate 1 cm thick of refractive index 1.50 is interposed between lens and film with its plane faces parallel to film .at what distance (from lens) should object shifted to be in sharp focus on film
1.7.2 cm
2.2.4cm
3.3.2 cm
4.5.6 cm

Q. A camera fitted with a lens of focal length 50 mm is being used to photograph a flower that is 5 cm in diameter. The flower is placed 20 cm in front of the camera lens.
(a) At what distance from the film should the lens be adjusted to obtain a sharp image of the flower?
(b) What would be the diameter of the image of the flower on the film?
(c) What is the nature of camera lens?

Q. A convex lens is put $10cm$ from a light source and it makes a sharp image on a screen, kept $10cm$ from the lens. Now a glass block (refractive index 1.5) of $1.5cm$ thickness is placed in contact with the light source. To get the sharp image again, the screen is shifted by a distance $d$. Then $d$ is :

Q. An object 2.4 m in front of a lens forms a sharp image on a film 12 cm behind the lens. A glass plate 1 cm thick, of refractive index 1.50 is interposed between lens and films with its plane faces parallel to film. At what distance (from lens) should object shifted to be in sharp focus on film?

Q. An object $2.4\text{m}$ in front of a lens forms a sharp image on a film $12\text{cm}$ behind the lens. A glass plate $1\text{cm}$ thick, of refractive index $1.50$ is interposed between lens and film with its plane faces parallel to film. By what distance (from lens) in m should object be shifted to form a sharp image on film?

Q. An object $2.4\text{m}$ in front of a lens forms a sharp image on a film $12\text{cm}$ behind the lens. A glass plate $1\text{cm}$ thick, of refractive index $1.5$ is inserted between lens and film with its plane faces parallel to film. At what distance (from lens) should the object shifted to be in sharp focus of film?