Ray Optics and Optical Instruments

Related Questions

• Which of the following element was discovered by study of Fraunhofer lines

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• A thin lens made of glass of refractive index $\mu = 1.5$ has a focal length equal to 12 cm in air. It is now immersed in water $\left( \mu \,=\,\frac{4}{3} \right)$. Its new focal length is

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• In a compound microscope, if the objective produces an image $I_o$ and the eye piece produces an image $I_e$, then

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• What is the time taken (in seconds) to cross a glass of thickness $4 mm$ and $\mu $= 3 by light

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• Wavelength of light used in an optical instrument are ${{\lambda }_{1}}=4000$Å and ${{\lambda }_{2}}=5000$Å, then ratio of their respective resolving power (corresponding to ${{\lambda }_{1}}$and ${{\lambda }_{2}})$is

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