Part 2
An equi-convex lens, having radius of curvature 33 cm is placed on a horizontal plane mirror and a pin held 20 cm above the lens coincides with its image. Now the space between the and the mirror is filled with a liquid in order to coincide with the image the pin has to be raised by 5 cm. The refractive index of the liquid is
17
Nov
An equi-convex lens, having radius of curvature 33 cm is placed on a horizontal plane mirror and a pin held 20 cm above the lens coincides with its image. Now the space between the and the mirror is filled with a liquid in order to coincide with the image the pin has to be raised [...]
A convex lenses of focal length 40 cm is held coaxially 12 cm above a concave mirror of focal length 18 cm. An object held x cm above the lens gives rise to an image coincident with it. Then x is equal to
17
Nov
A convex lenses of focal length 40 cm is held coaxially 12 cm above a concave mirror of focal length 18 cm. An object held x cm above the lens gives rise to an image coincident with it. Then x is equal to A convex lens of glass has power P in air. If it [...]
An object is placed at 15 cm from a convex lens of focal length 10 cm . Where should another convex mirror of radius 12 cm placed such that image will coincide with object
17
Nov
An object is placed at 15 cm from a convex lens of focal length 10 cm . Where should another convex mirror of radius 12 cm placed such that image will coincide with object An object is placed at 15 cm from a convex lens of focal length 10 cm . Where should another convex [...]
A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an image of the object coincident with it
17
Nov
A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an image of the object coincident with [...]
The distance between a convex lens and a plane mirror is 10 cm. The parallel rays incident on the convex lens after reflection from the mirror forms image at the optical centre of the lens. Focal length of lens will be
17
Nov
The distance between a convex lens and a plane mirror is 10 cm. The parallel rays incident on the convex lens after reflection from the mirror forms image at the optical centre of the lens. Focal length of lens will be A convex lens of glass has power P in air. If it is immersed [...]
A concave lens of focal length 20 cm placed in contact with a plane mirror acts as a
17
Nov
A concave lens of focal length 20 cm placed in contact with a plane mirror acts as a A concave lens of focal length 20 cm placed in contact with a plane mirror acts as a November 17, 2020 Category: Cengage NEET by C.P Singh , Chapter 18 - Refraction at Spherical Surfaces , Part [...]
A real image of an object is formed by a convex lens at the bottom of an empty beaker. The beaker is now filled with a liquid of refractive index 1.4 to a depth of 7 cm. In order to get the image again at the bottom, the beaker should be moved
17
Nov
A real image of an object is formed by a convex lens at the bottom of an empty beaker. The beaker is now filled with a liquid of refractive index 1.4 to a depth of 7 cm. In order to get the image again at the bottom, the beaker should be moved A convex lens [...]
A lens forms a sharp image on a screen. On inserting a parallel sided glass slab between the lens and the screen, it is found necessary to move the screen a distance d away the lens in order for the image to be sharp again. If the refractive index of the material of the slab is μ, the thickness of the slab is
17
Nov
A lens forms a sharp image on a screen. On inserting a parallel sided glass slab between the lens and the screen, it is found necessary to move the screen a distance d away the lens in order for the image to be sharp again. If the refractive index of the material of the slab [...]
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A lens forms a sharp image on a screen. On inserting a parallel sided glass slab between the lens and the screen ,
it is found necessary to move the screen a distance d away the lens in order for the image to be sharp again. If the refractive index of the material of the slab is μ ,
the thickness of the slab is ,
A converging lens forms a real image I on its optic axis. A rectangular glass slab of refractive index μ and thickness t is introduced between the lens and I. I will move
17
Nov
A converging lens forms a real image I on its optic axis. A rectangular glass slab of refractive index μ and thickness t is introduced between the lens and I. I will move A converging lens forms a real image I on its optic axis. A rectangular glass slab of refractive index μ and thickness [...]
An object is placed 12 cm to the left of a converging lens of focal length 8cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce
17
Nov
An object is placed 12 cm to the left of a converging lens of focal length 8cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce A convex lens of glass has power P in air. [...]