Chapter 32 – Ray Optics
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Two identical glass (μg=3/2) equi-convex lenses of focal length f are kept in contact. The space between the two lenses is filled with water (μw=4/3). The focal length of the combination is
20
Aug
Two identical glass (μg=3/2) equi-convex lenses of focal length f are kept in contact. The space between the two lenses is filled with water (μw=4/3). The focal length of the combination is Two identical glass (μg=3/2) equi-convex lenses of focal length f are kept in contact. The space between the two lenses is filled with [...]
A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again ?
20
Aug
A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again ? In total internal reflection when the angle of incidence is [...]
A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels up to the surface of the liquid and moves along its surface (see figure). How fast is the light traveling in the liquid?
20
Aug
A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels up to the surface of the liquid and moves along its surface (see figure). How fast is the light traveling in the liquid? In total internal reflection when the angle of incidence [...]
The frequency of a light wave in a material is 2 × 10¹⁴ Hz and wavelength is 5000 Å. The refractive index of material will be
20
Aug
The frequency of a light wave in a material is 2 × 10¹⁴ Hz and wavelength is 5000 Å. The refractive index of material will be In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact what will be angle of refraction? August [...]
An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is
20
Aug
An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is In total internal reflection when the angle of incidence is equal to the critical [...]
A ray of light travelling in a transparent medium of refractive index μ, falls on a surface separating the medium from air at an angle of incidence of 45o . For which of the following value of μ the ray can undergo total internal reflection ?
20
Aug
A ray of light travelling in a transparent medium of refractive index μ, falls on a surface separating the medium from air at an angle of incidence of 45o . For which of the following value of μ the ray can undergo total internal reflection ? A ray of light travelling in a transparent medium [...]
Which of the following is not due to total internal reflection ?
20
Aug
Which of the following is not due to total internal reflection ? Which of the following is not due to total internal reflection ? August 20, 2020 Category: Chapter 32 - Ray Optics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact, what will be angle of refraction?
20
Aug
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact, what will be angle of refraction? In total internal reflection when the angle of incidence is equal to the critical angle for the pair of medium in contact what will be angle of [...]
A concave mirror of focal length ′f1′ is placed at a distance of ′d′ from a convex lens of focal length ′f2′. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance ′d′ must equal
20
Aug
A concave mirror of focal length ′f1′ is placed at a distance of ′d′ from a convex lens of focal length ′f2′. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance ′d′ must equal If λv λx and λm represents the wavelength of [...]
An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be
20
Aug
An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be An object is placed at a distance of 40 cm from a concave mirror of [...]