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प्रश्न
State the dependence of angle of deviation On the wavelength of light
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उत्तर
The angle of deviation decreases with an increase in the wavelength of light. Thus, a prism deviates violet light the most and red light the least.
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संबंधित प्रश्न
Four students P, Q, R and S traced the path of a ray of light passing through a glass slab for an angle of incidence 40° and measured the angle of refraction. The values as measured them were 18°; 22°; 25° and 30° respectively. The student who has performed the experiment methodically is
(A) P
(B) Q
(C) R
(D) S
How must light travel out of a substance if it is not going to be refracted?
With the help of diagram of the principal section of a prism, indicate its refracting surfaces, refracting edge and base.
Trace the path of a ray of light incident at an angle of 45° on a rectangular glass slab. Write the measure of the angle of refraction, the angle of emergence and the lateral displacement suffered by the ray as it passes through the slab.
In the fig. name the ray which represents the correct path of light while passing through a glass block.
A glass slab is placed over a page on which the word VIBGYOR is printed with each letter in its corresponding colour.
- Will the image of all the letters be in the same place?
- If not, the state which letter will be raised to the maximum. Give a reason for your answer.
Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.
Calculate the velocity of light in a glass block of refractive index 1.5. (Velocity of light in air = 3 × 108 m/s)
Observe the figure and name the ray AB, ray CD, ray GH.
