[" Find the position of image with respect to right "],[" most lens formed by the lens combination :- "],[qquad [f=,10cm],[*,30cm()],[*,*(30cm)/(longrightarrow)]]

Find the distance of the image from object O, formed by the combination of lenses in the figure : f=+10cmf=-10cn f=+30cm

The position of fical image formed by the given lens combination from the third lens will be at a distance of f_1=+10cm,f_2=-10cm,f_3=+30

Find the position, nature and size of the image formed by a convex lens of focal length 20 cm of an object 4 cm high placed at a distance of 30cm from it.

An object of height 4 cm is kept to the left of and on the axis of a converging lens offocal length 10cm at a distance of 15cm from lens. A plane mirror is placed inclined at 45^(@) to the lens axis, 10 cm to the right of the lens.Find the position and size of the image formed by the lens and mirror combination. Trace the path ofthe rays forming the image.

An object to the left of a lens is imaged by the lens on a screen 30cm to the right of the lens. When the lens is moved 5cm to the right, the screen must be moved 5cm to the left to refocus the images. The focal length of lens is :-

An object to the left of a lens is imaged by the lens on a screen 30cm to the right of the lens. When the lens is moved 5cm to the right, the screen must be moved 5cm to the left to refocus the images. The focal length of lens is :-

An object to the left of a lens is imaged by the lens on a screen 30cm to the right of the lens. When the lens is moved 5cm to the right, the screen must be moved 5cm to the left to refocus the images. The focal length of lens is :-

An object is placed at a distance of 10cm form a co-axial combination of two lenses A and B in contact. The combination forms a real image three times the size of the object. If lens B is concave with a focal length of 30cm. The nature and focal length of lens A is

An object is placed at a distance of 10cm form a co-axial combination of two lenses A and B in contact. The combination forms a real image three times the size of the object. If lens B is concave with a focal length of 30cm. The nature and focal length of lens A is