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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionEasy2 minPYQ_2020

PhysicsEasysingle choice

The red light of a wavelength $6400 Å$ in the air has a wavelength of $4000 Å$ in glass. If the wavelength of violet light in air is $4400 Å$ , then the wavelength in the glass is

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Answer:

Solution:

$μ_{g} = \frac{{(λ_{r})}_{air}}{{(λ_{r})}_{air}}$

Now, $μ_{g} = \frac{{(λ_{v})}_{air}}{{(λ_{v})}_{glass}} = \frac{6400}{4000}$

${(λ_{v})}_{glass} = \frac{{(λ_{v})}_{air}}{μ_{g}} = \frac{4400}{1 .6} = 2750 Å$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:TIR/Prism and Dispersion

⏱ 2mℹ️ Source: PYQ_2020

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