The angular dispersion produced by a prism

1. increases if the average refractive index increases

2. increases if the average refractive index decreases

3. remains constant whether the average refractive index increases or decreases

4. has no relation with average refractive index

Subtopic:  Prisms |

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If a glass prism is dipped in water, its dispersive power

1. increases

2. decreases

3. does not change

4. may increase or decrease depending on whether the angle of the prism is less than or greater than 60°

Subtopic:  Prisms |

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A prism can produce a minimum deviation \(\delta\) in a light beam. If three such prisms are combined, the minimum deviation that can be produced in this beam is

1. 0

2. \(\delta\)

3. 2\(\delta\)

4. 3\(\delta\)

Subtopic:  Prisms |

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Consider the following two statements:

(A) Line spectra contain information about atoms.
(B) Band spectra contain information about molecules.

1. Both A and B are wrong

2. A is correct but B is wrong

3. B is correct but A is wrong

4. Both A and B are correct

Subtopic:  Prisms |

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By properly combining two prisms made of different materials, it is possible to

(a) have dispersion without average deviation

(b) have deviation without dispersion

(c) have both dispersion and average deviation

(d) have neither dispersion nor average deviation

Choose the correct option:

1. (a) and (b)

2. (b) and (c)

3. (a), (b) and (c)

3. (b), (c) and (d)

Subtopic:  Prisms |

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