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प्रश्न
What is the refractive index of vacuum
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उत्तर
Unity
संबंधित प्रश्न
What is a spectrum?
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation.
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
A ray of light enters a glass slab ABDC as shown in figure and strikes at the centre O of the circular part AC of the slab. The critical angle of glass is 42°. Complete the path of the ray till it emerges out from the slab. Mark the angles in the diagram wherever necessary.
A student traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence (∠i) , refraction (∠r) and emergence (∠e) as shown. Which angle or angles has he not marked correctly?
(A) ∠i only
(B) ∠i and ∠r
(C) ∠i and ∠e
(D) ∠r and ∠e
Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature, the glass piece is not seen.
Why is the light of a single colour used ?
Name the phenomenon responsible in the following case:
Apparent bending of a stick in water
Comment on the statement ‘The refractive index of glass is 3/2.’
A ray of light is incident at an angle of 45° on one face of a rectangular glass slab of thickness 10 cm and refractive index 3/2. Calculate the lateral shift produced ______.
