Chapter 16 – Optics
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A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 4/3 and the fish is 12 cm below the surface of water, the radius of circle in centimetre is
18
Nov
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 4/3 and the fish is 12 cm below the surface of water, the radius of circle in centimetre is A fish looking up through the water sees the outside world contained in [...]
The refractive index of glass is 1.520. for red light and 1.525 for blue light Let D1 and D2 be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then
18
Nov
The refractive index of glass is 1.520. for red light and 1.525 for blue light Let D1 and D2 be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then The refractive index of glass is 1.520. for red light and 1.525 for blue light Let D1 and [...]
Two lenses of power −15D and +5D are in contact with each other. The focal length of the combination is
18
Nov
Two lenses of power −15D and +5D are in contact with each other. The focal length of the combination is Two lenses of power −15D and +5D are in contact with each other. The focal length of the combination is November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video [...]
A student measures the focal length of a convex lens by putting an object pin at a distance u from the lens and measuring the distance v of the image pin. The graph between u and v plotted by the student should look like
18
Nov
A student measures the focal length of a convex lens by putting an object pin at a distance u from the lens and measuring the distance v of the image pin. The graph between u and v plotted by the student should look like In figure the number of reflections it makes before emerging form [...]
A transparent solid cylindrical rod has a refractive index of 2/3–√ .It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle θ for which the light ray grazes along the wall of the rod is:
18
Nov
A transparent solid cylindrical rod has a refractive index of 2/3–√ .It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle θ for which the light ray grazes along the wall of the rod is: In figure the [...]
In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plotted using the same scale for the two axes. A straight line passing through the origin and making an angle of 45∘ with x-axis meets the experimental curve at P. The coordinates of P will be.
18
Nov
In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plotted using the [...]
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a student varies the position of a convex lens and for each position ,
from the lens ,
In an optics experiment ,
is plotted using the same scale for the two axes. A straight line passing through the origin and making an angle of 45∘ with x-axis meets the experimental curve at P. The coordinates of P will be. ,
the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v ,
with the position of the object fixed ,
The speed of light in the medium is :
18
Nov
The speed of light in the medium is : The speed of light in the medium is : November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
As the beam enters the medium, it will
18
Nov
As the beam enters the medium, it will As the beam enters the medium it will November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,
A car is fitted with a convex side-view mirror of focal length 20 cm. A second car 2.8m behind the first car is overtaking the first car at a relative speed of 15 ms. The speed of the image of the second car as seen in the mirror of the first one is
18
Nov
A car is fitted with a convex side-view mirror of focal length 20 cm. A second car 2.8m behind the first car is overtaking the first car at a relative speed of 15 ms. The speed of the image of the second car as seen in the mirror of the first one is In figure [...]
Let the x-z plane be the boundary between two transparent media. Media 1 in z ≥ 0 has refractive index of 2–√ and medium 2 with z < 0 has a refractive index of 3–√. A ray of light in medium 1 given by the vector A→=63–√iˆ+83–√jˆ−10kˆ in incident on the plane of separation. The angle of refraction in medium 2 is
18
Nov
Let the x-z plane be the boundary between two transparent media. Media 1 in z ≥ 0 has refractive index of 2–√ and medium 2 with z < 0 has a refractive index of 3–√. A ray of light in medium 1 given by the vector A→=63–√iˆ+83–√jˆ−10kˆ in incident on the plane of separation. The [...]