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CBSE - XII Science - Physics - Ray Optics and Optical Instruments
how do optical fibres transmit light without absorption
Asked by gazanfarali5782
9th January 2023,
3:21 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
please help
Asked by arpitarout132
29th April 2022,
1:12 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
When a ray of light travels from rarer to denser medium, can the angle of refraction in denser medium be more than the critical angle for the given pair of media?
Asked by csword674
25th October 2021,
3:10 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
the refracive index of a glass is 1.5. A sphere of this glass is immersed in water having refractive index as 4/3 .The critical angle for light rays originating within the sphere
Asked by varghesemc100
21st February 2019,
11:06 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
what is the minimum value of refractive index of prism for ITR in the figure shown.
Asked by Jerin Shaji
8th June 2017,
9:52 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
In a plano-convex lens, if the Convex side is perfectly covered with a silver foil, how to calculate the focal length of the system.
In a plano-convex lens, if the Convex side is perfectly covered with a silver foil, how to calculate the focal length of the system.
Asked by Malavika Umesh
5th May 2015,
12:55 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is critical angle?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Why is it that the images formed by total internal reflection are brighter than those formed by mirrors or lenses?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
(a) Mention the uses of total reflecting Prism (b) Give any two advantages of total reflecting prism
Asked by Topperlearning User
21st May 2014,
10:27 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
(a) What are the factors upon which the critical angle of a medium depends on ? (b) Calculate the speed of light in the medium whose critical angle is 45º.
Asked by Topperlearning User
21st May 2014,
10:20 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What are total reflecting prism?What is the phenomena behind reflecting glass prism?
Asked by Topperlearning User
21st May 2014,
10:12 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Derive the relation between critical angle and the refractive index?
Asked by Topperlearning User
21st May 2014,
10:05 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is a mirage?
Asked by Topperlearning User
21st May 2014,
9:56 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Does the phenomenon of total internal reflection take place when light travels from the rarer medium to the denser medium?
Asked by Topperlearning User
21st May 2014,
9:46 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Why or how does a diamond sparkle more than a transparent material like glass cut out in same shape?
Asked by Topperlearning User
21st May 2014,
9:37 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What will be the value of critical angle for total internal reflectionof light travelling from glass into water. Given
Asked by Topperlearning User
21st May 2014,
9:16 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
State the uses of optical fibres.
Asked by Topperlearning User
21st May 2014,
9:08 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is Total Internal Reflection? State two conditions which should be fulfilled for this phenomena.
Asked by Topperlearning User
21st May 2014,
8:54 AM
