MEDIUM
10th ICSE
IMPORTANT
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A transparent medium both reflects and refracts the light. Explain

Important Questions on Refraction at Plane Surfaces

MEDIUM
10th ICSE
IMPORTANT
What is the speed of light in vacuum? Name the only medium in which speed of light is equal to that of vacuum.
EASY
10th ICSE
IMPORTANT
Arrange the following mediums in decreasing order of the speed of light through them: Diamond, water, glass and air.
MEDIUM
10th ICSE
IMPORTANT
What are optically rarer and denser mediums? Give an example when glass behaves as a i rarer, ii denser medium.
EASY
10th ICSE
IMPORTANT
What is absolute refractive index of a transparent medium? Explain.
EASY
10th ICSE
IMPORTANT
Speed of light in a transparent medium is 2.4×108 m/s. What is the absolute refractive index of the medium?
EASY
10th ICSE
IMPORTANT
Absolute refractive index of diamond is 2.4. What is the speed of light in diamond?
EASY
10th ICSE
IMPORTANT
Speed of light in water and in glass is 2.24×108 ms-1 and 2.0×108 ms-1 respectively. What is the refractive index of water with respect to glass?
MEDIUM
10th ICSE
IMPORTANT
Calculate the time taken by a light ray when it passes through a glass sheet of thickness 2 mm. Given refractive index of glass with respect to air μga=32 and c=3.0×108 ms-1