A prism of a certain angle deviates the red and blue rays by `8^@` and `12^@` respectively. Another prism of the same angle deviates the red and blue rays by `10^@` and `14^@` respectively. The prisms are small angled and made of different materials. The dispersive powers of the materials of the prisms are in the ratioA. `5:6`B. `9:11`C. `6:5`D. `11:9`

A prism of a certain angle deviates the red and blue rays by `8^@` and

1.	A prism of a certain angle deviates the red and blue rays by `8^@` and `12^@` respectively. Another prism of the same angle deviates the red and blue rays by `10^@` and `14^@` respectively. The prisms are small angled and made of different materials. The dispersive powers of the materials of the prisms are in the ratioA. `5:6`B. `9:11`C. `6:5`D. `11:9`
Answer» Correct Answer - C Prism (1), `omega_1=(delta_B-delta_R)/(delta)=(12-8)/(10)` (Since `delta=(delta_B+delta_R)/(2)`) `=4//10=2//5` Prism (2), `omega_2=(delta_B-delta_R)/(delta)=(14-10)/(12)=1/3` `omega_1//omega_2=(2//5)/(1//3)=6/5`

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A prism of a certain angle deviates the red and blue rays by `8^@` and `12^@` respectively. Another prism of the same angle deviates the red and blue rays by `10^@` and `14^@` respectively. The prisms are small angled and made of different materials. The dispersive powers of the materials of the prisms are in the ratioA. `5:6`B. `9:11`C. `6:5`D. `11:9`

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