Chapter 16 – Optics
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The figure shows a Young’s double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index μ is put in front of one of the slits, the central maximum gest shifted by a distance equal to n fringe widths. If the wavelength of light used is λ, t will be
18
Nov
The figure shows a Young’s double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index μ is put in front of one of the slits, the central maximum gest shifted by a distance equal to n fringe widths. If the wavelength of light used is λ, [...]
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t will be ,
the central maximum gest shifted by a distance equal to n fringe widths. If the wavelength of light used is λ ,
The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index μ is put in front of one of the slits ,
Calculate the limit of resolution of a telescope objective having a diameter of 200 cm, if it has to detect light of wavelength 500 nm coming from a star
18
Nov
Calculate the limit of resolution of a telescope objective having a diameter of 200 cm, if it has to detect light of wavelength 500 nm coming from a star Calculate the limit of resolution of a telescope objective having a diameter of 200 cm if it has to detect light of wavelength 500 nm coming [...]
In an interference experiment the ratio of amplitudes of coherent waves is a2/a1 = 3/1. The ratio of maximum and minimum intensities of fringes will be
18
Nov
In an interference experiment the ratio of amplitudes of coherent waves is a2/a1 = 3/1. The ratio of maximum and minimum intensities of fringes will be In an interference experiment the ratio of amplitudes of coherent waves is a2/a1 = 3/1. The ratio of maximum and minimum intensities of fringes will be November 18, 2020 [...]
Which of the following is used in optical fibres ?
18
Nov
Which of the following is used in optical fibres ? Which of the following is used in optical fibres ? November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
To get three images of a single object, one should have two plane mirrors at an angle of
18
Nov
To get three images of a single object, one should have two plane mirrors at an angle of one should have two plane mirrors at an angle of To get three images of a single object November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
The image formed by an objective of a compound microscope is
18
Nov
The image formed by an objective of a compound microscope is The image formed by an objective of a compound microscope is November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by
18
Nov
The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
A plano convex lens of refractive index 1.5 and radius of curvature 30cm. Is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of size of the object.
18
Nov
A plano convex lens of refractive index 1.5 and radius of curvature 30cm. Is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of size of the object. The [...]
A light ray is incident perpendicular to one face of a 90∘ prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45∘, we conclude that the refractive index n as
18
Nov
A light ray is incident perpendicular to one face of a 90∘ prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45∘, we conclude that the refractive index n as A light ray is incident perpendicular to one face of a 90∘ prism and is totally internally reflected [...]
A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will be
18
Nov
A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will be A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will [...]