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प्रश्न
Which colour of light travels fastest in any medium except air?
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उत्तर
The red colour of light will travel the fastest in any medium.
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संबंधित प्रश्न
In your laboratory you trace the path of light rays through a glass slab for different values of angle of incidence (∠i) and in each case measure the values of the corresponding angle of refraction (∠r) and angle of emergence (∠e). On the basis of your observations your correct conclusion is:
(a) ∠i is more than ∠r, but nearly equal to ∠e
(b) ∠i is less then ∠r, but nearly equal to ∠e
(c) ∠i is more than ∠e, but nearly equal to ∠r
(d) ∠i is less than ∠e, but nearly equal to ∠r
Draw a ray diagram to show the refraction of light through a glass slab and mark angle of refraction and the lateral shift suffered by the ray of light while passing through the slab.
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
How does the angle of minimum deviation produces by a prism change with increase in :
the wavelength of incident light
How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?
A postage stamp kept below a rectangular glass block of refractive index 1.5 when viewed from vertically above it, appears to be raised by 7.0 mm. Calculate the thickness of the glass slab.
State the factors on which the angle of deviation depends.
What is the total reflecting prism?
How will you verify the laws of refraction or how the refractive index of glass is determined in the laboratory?
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.
- Copy and complete the path of the rays A and B.
- How do the speeds of these rays differ in glass?
- Are the two refracted rays in glass parallel? Give a reason.
