Ray Optics and Optical Instruments

Related Questions

• The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

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• A diver in a swimming pool wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light

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• An achromatic combination of lenses is formed by joining

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• The minimum distance between the object and its real image for concave mirror is

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• With respect to air critical angle in a medium for light of red colour $[{{\lambda }_{1}}]$ is $\theta $. Other facts remaining same, critical angle for light of yellow colour $[{{\lambda }_{2}}$] will be

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