Chapter 18 – Refraction at Spherical Surfaces
Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 18 - Refraction at Spherical Surfaces
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. [...]
The position of final image formed by the given lens combination from the third lens will be at a distance of (f1 = +10cm, f2 =−10cm and f3 =+30cm).
17
Nov
The position of final image formed by the given lens combination from the third lens will be at a distance of (f1 = +10cm, f2 =−10cm and f3 =+30cm). f2 = −10cm and f3 = +30cm). The position of final image formed by the given lens combination from the third lens will be [...]
A combination of two thin lenses with focal lengths f1 and f2 respectively forms and image of distant object at distance 60cm when lenses are in contact. The position of this image shifts by 30cm towards the combination when two lenses are separated by 10 cm. The corresponding values of f1 and f2 are
17
Nov
A combination of two thin lenses with focal lengths f1 and f2 respectively forms and image of distant object at distance 60cm when lenses are in contact. The position of this image shifts by 30cm towards the combination when two lenses are separated by 10 cm. The corresponding values of f1 and f2 are A [...]