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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
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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.

Asked by Malavika Umesh 5th May 2015, 12:55 PM
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CBSE - XII Science - Physics - Ray Optics and Optical Instruments

What is critical angle?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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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
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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
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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
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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
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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
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CBSE - XII Science - Physics - Ray Optics and Optical Instruments

What is a mirage?

Asked by Topperlearning User 21st May 2014, 9:56 AM
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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
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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
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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
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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
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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
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