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प्रश्न
A ray of light of wavelength 6600 Å suffer refraction from air to glass. Taking \[\ce{_a\mu_g = \frac{3}{2}}\], find the wavelength of light in glass.
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उत्तर
We know that V = f λ
air μ glass = `"Velocity in vacuum or air"/"Velocity in glass"`
`3/2 = (f "air" xx λ "air")/(f "glass" xx λ "glass")`
However, light's frequency does not change as it refracts.
∴ f air = f glass
∴ `3/2 = (λ "air")/(λ "glass")`
λ glass = wave length in glass = `2/3 λ` air
λ glass = `2/3 xx 6600`
= 4400 Å
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संबंधित प्रश्न
A student traces the path of a ray of light passing through a rectangular glass slab and marks the angle of incidence i, angle of refraction r and angle of emergence e, as shown.
The correctly marked angle(s) is/are
(A) ∠ i only
(B) ∠ e only
(C) ∠ r only
(D) ∠ i and ∠ e
Why do we get a spectrum of seven colors when white light is dispersed by a prism?
Which of the above wavelengths has a higher frequency?
How must light travel out of a substance if it is not going to be refracted?
Draw diagrams to show the refraction of light from
- air to glass, and
- glass to air. In each diagram, label the incident ray, refracted ray, the angle of incidence
- and the angle of refraction (r).
How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?
A ray of light strikes the surface of a rectangular glass slab such that the angle of incidence in air is
- 0°,
- 45°.
In each case, draw a diagram to show the path taken by the ray as it passes through the glass slab and emerges from it.
