Chapter 16 – Optics
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what is the position and nature of image formed by lens combination shown in figure ? (f1,f2 are focal lengths)
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Nov
what is the position and nature of image formed by lens combination shown in figure ? (f1,f2 are focal lengths) f2 are focal lengths) what is the position and nature of image formed by lens combination shown in figure ? (f1 November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved [...]
A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum deviation. If the refractive index of the material of the prism is 3–√, then the angle of incidence is
18
Nov
A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum deviation. If the refractive index of the material of the prism is 3–√, then the angle of incidence is A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum deviation. If [...]
An object is at a distance of 20 m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5m/s, the speed and direction of the image will be :
18
Nov
An object is at a distance of 20 m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5m/s, the speed and direction of the image will be : An object is at a distance [...]
The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?
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Nov
The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation? if Dm is the angle of minimum deviation? The variation of refractive index of a crown glass thin prism [...]
The eye can be regarded as a single refracting surface is equal to that of cornea (7.8 mm). This surface separates two media of refractive indices 1 and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus.
18
Nov
The eye can be regarded as a single refracting surface is equal to that of cornea (7.8 mm). This surface separates two media of refractive indices 1 and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus. In figure the number of reflections it makes [...]
A plano convex lens of refractive index μ1 and focal length f1 is kept in contact with another plano concave lens of refractive index μ2 and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then μ1 and μ2 are related as :
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Nov
A plano convex lens of refractive index μ1 and focal length f1 is kept in contact with another plano concave lens of refractive index μ2 and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then μ1 and μ2 are related as : In figure [...]
A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10 cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness id placed in contact with the light source. To get the sharp image again, the screen is shifted by a distance d. Then d is :
18
Nov
A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10 cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness id placed in contact with the light source. To get the sharp image again, the screen is shifted [...]
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A convex lens is put 10 cm from a light source and it makes a sharp image on a screen ,
kept 10 cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness id placed in contact with the light source. To get the sharp image again ,
the screen is shifted by a distance d. Then d is : ,
A transparent cube of side d, made of a material of refractive index μ2, is immersed in a liquid of refractive index μ1(μ1
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Nov
A transparent cube of side d, made of a material of refractive index μ2, is immersed in a liquid of refractive index μ1(μ1 A transparent cube of side d is immersed in a liquid of refractive index μ1(μ1 made of a material of refractive index μ2 November 18, 2020 Category: Chapter 16 - Optics , [...]
A concave mirror has radius of curvature of 40 cm. It is at the bottom of a glass that has water filled up to 5 cm (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance d from the surface of water. The value of d is close to : (Refractive index of water = 1.33)
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Nov
A concave mirror has radius of curvature of 40 cm. It is at the bottom of a glass that has water filled up to 5 cm (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance d from the [...]
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A concave mirror has radius of curvature of 40 cm. It is at the bottom of a glass that has water filled up to 5 cm (see figure). If a small particle is floating on the surface of water ,
from directly above the glass ,
is at a distance d from the surface of water. The value of d is close to : (Refractive index of water = 1.33) ,
its image as seen ,
The graph shows how the magnification m produced by a convex thin lens varies with image distance v. What was the focal length of the used ?
18
Nov
The graph shows how the magnification m produced by a convex thin lens varies with image distance v. What was the focal length of the used ? The graph shows how the magnification m produced by a convex thin lens varies with image distance v. What was the focal length of the used ? November [...]