Ray Optics and Optical Instruments

Related Questions

• A double convex lens $({{R}_{1}}={{R}_{2}}=10\,cm)$ $(\mu =1.5)$ having focal length equal to the focal length of a concave mirror. The radius of curvature of the concave mirror is

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• A microscope is focussed on a coin lying at the bottom of a beaker. The microscope is now raised up by $1$ cm. To what depth should the water be poured into the beaker so that coin is again in focus ? (Refractive index of water is $\frac{4}{3}$) [BHU 2003]

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• By placing the prism in minimum deviation position, images of the spectrum

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• If the angle of prism is ${{60}^{o}}$ and the angle of minimum deviation is ${{40}^{o}}$, the angle of refraction will be

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• Critical angle for light going from medium (i) to (ii) is $\theta$. The speed of light in medium (i) is $v$ then speed in medium (ii) is

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