282799
The Sun is seen little before it rises and for a short while after it sets. This is because of
1 total internal reflection
2 atmospheric refraction
3 apparent shift in the direction of Sun
4 dispersion
Explanation:
B: Due to atmospheric refraction sun is seen little before it rises and for a short while after it sets.
NDA (I) 2019
Ray Optics
282800
Assertion: Dispersion of light occurs because velocity of light in a material depends upon its colour.
Reason: The dispersive power depends only upon the material of the prism, not upon the refractive angle of the prism.
1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
Explanation:
B: The velocity of light in a material or medium depends upon its colour (wavelength). If ray of white light incident on prism then on emerging the different colours divided through different angle.
dispersive power \(w=\left(\frac{\mu_v-\mu_R}{\mu_y-1}\right)\) w depends on only \(\mu\)
AIIMS-26.05.2019(M) Shift-1
Ray Optics
282801
Calculate the dispersive power for crown glass from the given data
and
\(\begin{aligned}
\mu_{\mathrm{v}}=1.523 \\
\mu_{\mathrm{R}}=1.5145
\end{aligned}\)
282802
Dispersion without deviation is produced by two thin (small angled) prisms which are combined together. One prism has angle \(5^{\circ}\) and refractive index 1.56 . If the other prism has refractive index 1.7 , what is its angle?
282799
The Sun is seen little before it rises and for a short while after it sets. This is because of
1 total internal reflection
2 atmospheric refraction
3 apparent shift in the direction of Sun
4 dispersion
Explanation:
B: Due to atmospheric refraction sun is seen little before it rises and for a short while after it sets.
NDA (I) 2019
Ray Optics
282800
Assertion: Dispersion of light occurs because velocity of light in a material depends upon its colour.
Reason: The dispersive power depends only upon the material of the prism, not upon the refractive angle of the prism.
1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
Explanation:
B: The velocity of light in a material or medium depends upon its colour (wavelength). If ray of white light incident on prism then on emerging the different colours divided through different angle.
dispersive power \(w=\left(\frac{\mu_v-\mu_R}{\mu_y-1}\right)\) w depends on only \(\mu\)
AIIMS-26.05.2019(M) Shift-1
Ray Optics
282801
Calculate the dispersive power for crown glass from the given data
and
\(\begin{aligned}
\mu_{\mathrm{v}}=1.523 \\
\mu_{\mathrm{R}}=1.5145
\end{aligned}\)
282802
Dispersion without deviation is produced by two thin (small angled) prisms which are combined together. One prism has angle \(5^{\circ}\) and refractive index 1.56 . If the other prism has refractive index 1.7 , what is its angle?
282799
The Sun is seen little before it rises and for a short while after it sets. This is because of
1 total internal reflection
2 atmospheric refraction
3 apparent shift in the direction of Sun
4 dispersion
Explanation:
B: Due to atmospheric refraction sun is seen little before it rises and for a short while after it sets.
NDA (I) 2019
Ray Optics
282800
Assertion: Dispersion of light occurs because velocity of light in a material depends upon its colour.
Reason: The dispersive power depends only upon the material of the prism, not upon the refractive angle of the prism.
1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
Explanation:
B: The velocity of light in a material or medium depends upon its colour (wavelength). If ray of white light incident on prism then on emerging the different colours divided through different angle.
dispersive power \(w=\left(\frac{\mu_v-\mu_R}{\mu_y-1}\right)\) w depends on only \(\mu\)
AIIMS-26.05.2019(M) Shift-1
Ray Optics
282801
Calculate the dispersive power for crown glass from the given data
and
\(\begin{aligned}
\mu_{\mathrm{v}}=1.523 \\
\mu_{\mathrm{R}}=1.5145
\end{aligned}\)
282802
Dispersion without deviation is produced by two thin (small angled) prisms which are combined together. One prism has angle \(5^{\circ}\) and refractive index 1.56 . If the other prism has refractive index 1.7 , what is its angle?
NEET Test Series from KOTA - 10 Papers In MS WORD
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Ray Optics
282799
The Sun is seen little before it rises and for a short while after it sets. This is because of
1 total internal reflection
2 atmospheric refraction
3 apparent shift in the direction of Sun
4 dispersion
Explanation:
B: Due to atmospheric refraction sun is seen little before it rises and for a short while after it sets.
NDA (I) 2019
Ray Optics
282800
Assertion: Dispersion of light occurs because velocity of light in a material depends upon its colour.
Reason: The dispersive power depends only upon the material of the prism, not upon the refractive angle of the prism.
1 If both assertion and reason are true and reason is the correct explanation of assertion.
2 If both assertion and reason are true but reason is not the correct explanation of assertion.
3 If assertion is true but reason is false.
4 If both assertion and reason are false.
Explanation:
B: The velocity of light in a material or medium depends upon its colour (wavelength). If ray of white light incident on prism then on emerging the different colours divided through different angle.
dispersive power \(w=\left(\frac{\mu_v-\mu_R}{\mu_y-1}\right)\) w depends on only \(\mu\)
AIIMS-26.05.2019(M) Shift-1
Ray Optics
282801
Calculate the dispersive power for crown glass from the given data
and
\(\begin{aligned}
\mu_{\mathrm{v}}=1.523 \\
\mu_{\mathrm{R}}=1.5145
\end{aligned}\)
282802
Dispersion without deviation is produced by two thin (small angled) prisms which are combined together. One prism has angle \(5^{\circ}\) and refractive index 1.56 . If the other prism has refractive index 1.7 , what is its angle?
