Maths-
General
Easy
Question
- 8
- 1
- 9
- 7
The correct answer is: 7
Divide Nr by Dr
Related Questions to study
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A transparent solid cylindrical rod has a refractive index of 
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The incident angle q for which the light ray grazes along the wall of the rod is
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The incident angle q for which the light ray grazes along the wall of the rod is
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An object is placed 20 cm in front of a plano–convex lens of focal length 15 cm. The plane surface of the lens is silvered. The image will be formed at a distance
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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 the circle in centimeter is
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Consider the situation shown in figure. Water (mw = 4/3) is filled in a beaker upto a height of 10 cm. A plane mirror is fixed at a height of 5 cm from the surface of water. Distance of image from the mirror after reflection from the mirror after reflection from it of an object O at the bottom of the beaker is
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One side of a glass slab is silvered as shown in figure. A ray of light is incident on the other side at angle of incidence i = 45º. Refractive index of glass is given as 1.5. The deviation of the ray of light from its initial path when it comes out of the slab is
One side of a glass slab is silvered as shown in figure. A ray of light is incident on the other side at angle of incidence i = 45º. Refractive index of glass is given as 1.5. The deviation of the ray of light from its initial path when it comes out of the slab is
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Consider the following diagram The incident ray parallel to the optical axis passing through
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A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
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A prism of refractive index 
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When the prism is in the minimum deviation position (Figure). Choose the correct one.
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Figure shows a cross - section of light pipe made of glass fibre of refractive index 1.68. The outer coating of the pipe is made of a material of refractive index 1.44. What is the range of angles of the incident rays with the axis of the pipe for which total internal reflection inside the pipe takes place ?
Figure shows a cross - section of light pipe made of glass fibre of refractive index 1.68. The outer coating of the pipe is made of a material of refractive index 1.44. What is the range of angles of the incident rays with the axis of the pipe for which total internal reflection inside the pipe takes place ?
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