QBManager

Ray Optics

282811 A thin prism $P_{1}$ with angle $6^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ of refractive index 1.72to produce dispersion without deviation. The angle of prism $P_{2}$ will be

1

4^{0} 30^{'}

2

{8.5}^{0}

3

{6.5}^{0}

4 None of these

Explanation:

A: Given,
$\begin{array}{r} A_{1} = 6^{\circ}, A_{2} = ? \\ μ_{1} = 1.54, μ_{2} = 1.72 \end{array}$
For thin prism-
$\begin{array}{r} A_{1} (μ_{1} - 1) = A_{2} (μ_{2} - 1) \\ 6^{\circ} (1.54 - 1) = A_{2} (1.72 - 1) \\ A_{2} = \frac{6 \times 0.54}{0.72} \\ = {4.5}^{\circ} \\ A_{2} = 4^{\circ} 30^{'} \end{array}$

AIIMS-2011

Ray Optics

282812 The Cauchy's dispersion formula is

1

μ = A + B λ^{2} + C λ^{4}

2

μ = A + B λ^{- 2} + C λ^{4}

3

μ = A + B λ^{2} + C λ^{- 4}

4

μ = A + B λ^{- 2} + C λ^{- 4}

Explanation:

D: Cauchy's dispersion formula is-
$μ = A + B λ^{- 2} + C λ^{- 4}$
Where, $μ =$ refractive index
A, B and C are constant for a given medium.

AIIMS-2002

Ray Optics

282813 Rising and setting sun appears to be reddish because

1 Diffraction sends red rays to earth at these times

2 Scattering due to dust particles and air molecules are responsible

3 Refraction is responsible

4 Polarization is responsible

VITEEE-2007

Ray Optics

282814 Which of the above lenses do not exhibit dispersion?
**[SCRA-2015]#

1 II and IV

2 I

3 III

4 None

Ray Optics

282811 A thin prism $P_{1}$ with angle $6^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ of refractive index 1.72to produce dispersion without deviation. The angle of prism $P_{2}$ will be

1

4^{0} 30^{'}

2

{8.5}^{0}

3

{6.5}^{0}

4 None of these

Explanation:

A: Given,
$\begin{array}{r} A_{1} = 6^{\circ}, A_{2} = ? \\ μ_{1} = 1.54, μ_{2} = 1.72 \end{array}$
For thin prism-
$\begin{array}{r} A_{1} (μ_{1} - 1) = A_{2} (μ_{2} - 1) \\ 6^{\circ} (1.54 - 1) = A_{2} (1.72 - 1) \\ A_{2} = \frac{6 \times 0.54}{0.72} \\ = {4.5}^{\circ} \\ A_{2} = 4^{\circ} 30^{'} \end{array}$

AIIMS-2011

Ray Optics

282812 The Cauchy's dispersion formula is

1

μ = A + B λ^{2} + C λ^{4}

2

μ = A + B λ^{- 2} + C λ^{4}

3

μ = A + B λ^{2} + C λ^{- 4}

4

μ = A + B λ^{- 2} + C λ^{- 4}

Explanation:

D: Cauchy's dispersion formula is-
$μ = A + B λ^{- 2} + C λ^{- 4}$
Where, $μ =$ refractive index
A, B and C are constant for a given medium.

AIIMS-2002

Ray Optics

282813 Rising and setting sun appears to be reddish because

1 Diffraction sends red rays to earth at these times

2 Scattering due to dust particles and air molecules are responsible

3 Refraction is responsible

4 Polarization is responsible

VITEEE-2007

Ray Optics

282814 Which of the above lenses do not exhibit dispersion?
**[SCRA-2015]#

1 II and IV

2 I

3 III

4 None

Ray Optics

282811 A thin prism $P_{1}$ with angle $6^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ of refractive index 1.72to produce dispersion without deviation. The angle of prism $P_{2}$ will be

1

4^{0} 30^{'}

2

{8.5}^{0}

3

{6.5}^{0}

4 None of these

Explanation:

A: Given,
$\begin{array}{r} A_{1} = 6^{\circ}, A_{2} = ? \\ μ_{1} = 1.54, μ_{2} = 1.72 \end{array}$
For thin prism-
$\begin{array}{r} A_{1} (μ_{1} - 1) = A_{2} (μ_{2} - 1) \\ 6^{\circ} (1.54 - 1) = A_{2} (1.72 - 1) \\ A_{2} = \frac{6 \times 0.54}{0.72} \\ = {4.5}^{\circ} \\ A_{2} = 4^{\circ} 30^{'} \end{array}$

AIIMS-2011

Ray Optics

282812 The Cauchy's dispersion formula is

1

μ = A + B λ^{2} + C λ^{4}

2

μ = A + B λ^{- 2} + C λ^{4}

3

μ = A + B λ^{2} + C λ^{- 4}

4

μ = A + B λ^{- 2} + C λ^{- 4}

Explanation:

D: Cauchy's dispersion formula is-
$μ = A + B λ^{- 2} + C λ^{- 4}$
Where, $μ =$ refractive index
A, B and C are constant for a given medium.

AIIMS-2002

Ray Optics

282813 Rising and setting sun appears to be reddish because

1 Diffraction sends red rays to earth at these times

2 Scattering due to dust particles and air molecules are responsible

3 Refraction is responsible

4 Polarization is responsible

VITEEE-2007

Ray Optics

282814 Which of the above lenses do not exhibit dispersion?
**[SCRA-2015]#

1 II and IV

2 I

3 III

4 None

Ray Optics

282811 A thin prism $P_{1}$ with angle $6^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ of refractive index 1.72to produce dispersion without deviation. The angle of prism $P_{2}$ will be

1

4^{0} 30^{'}

2

{8.5}^{0}

3

{6.5}^{0}

4 None of these

Explanation:

A: Given,
$\begin{array}{r} A_{1} = 6^{\circ}, A_{2} = ? \\ μ_{1} = 1.54, μ_{2} = 1.72 \end{array}$
For thin prism-
$\begin{array}{r} A_{1} (μ_{1} - 1) = A_{2} (μ_{2} - 1) \\ 6^{\circ} (1.54 - 1) = A_{2} (1.72 - 1) \\ A_{2} = \frac{6 \times 0.54}{0.72} \\ = {4.5}^{\circ} \\ A_{2} = 4^{\circ} 30^{'} \end{array}$

AIIMS-2011

Ray Optics

282812 The Cauchy's dispersion formula is

1

μ = A + B λ^{2} + C λ^{4}

2

μ = A + B λ^{- 2} + C λ^{4}

3

μ = A + B λ^{2} + C λ^{- 4}

4

μ = A + B λ^{- 2} + C λ^{- 4}

Explanation:

D: Cauchy's dispersion formula is-
$μ = A + B λ^{- 2} + C λ^{- 4}$
Where, $μ =$ refractive index
A, B and C are constant for a given medium.

AIIMS-2002

Ray Optics

282813 Rising and setting sun appears to be reddish because

1 Diffraction sends red rays to earth at these times

2 Scattering due to dust particles and air molecules are responsible

3 Refraction is responsible

4 Polarization is responsible

VITEEE-2007

Ray Optics

282814 Which of the above lenses do not exhibit dispersion?
**[SCRA-2015]#

1 II and IV

2 I

3 III

4 None

Explanation:

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Question Bank Series

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Question Bank Series