When the gap between two identical concave thin "],[" lens "(mu=3/2,f=10cm)" placed in contact is filled with certain liquid,the image of an object placed at "15cm" from lens shifts away from the "lens by "5/4cm" .What is the R.I.of the liquid? (A) 1.50 (B) 1.33, (c)1.72 (d) 125

When the gap between two identical concave thin lenses (mu=(3)/(2), f=10cm) placed in contact is filled with certain liquid, the image of an object placed at 15 cm from lens combination shifts away from the lens by 5//4 cm. If the refractive index of liquid is mu , then write 3mu as your answer.

A 1 cm high object is placed at a distance of 2f from a convex lens. What is the height of the image formed?

What is the position of image when an object is placed is at a distance of 10 cm from a convex lens of focal length 10 cm?

Find the focal length of a convex lens which produces a virtual image at 10 cm from the lens when an object is placed at 5 cm from the lens.

A diverging meniscus lens of 1.5 refractive index has concave surfaces of radii 3 and 4 cm. The position of image if an object is placed 12cm infront of the lens is

A lens forms a virtual image 4 cm away from it when an object is placed 10 cm away from it. The lens is a ….. Lens of focal length ……………

A biconvex thick lens is constructed with glass (mu = 1.50). Each of the surfaces has a radius of 10 cm and the thickness at the middle is 5 cm. Locate the image of an object placed far away from the lens.

Find the focal length and power of a convex lens, which when placed in contact with a concave lens of focal length 25 cm forms a real image 5 times the size of the object placed 20 cm from the combination.