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[" 23.In an astronomical telescope in no...

[" 23.In an astronomical telescope in normal "],[" adjustment a straight black line of length "L],[" is drawn on inside part of objective lens.The "],[" eye-piece forms a real image of this line.The "],[" length of this image is "I" .The magnification "],[" of the telescope is "],[[" (a) "(L+I)/(L-I)," (c) "(L)/(I)+1" (d) "5)],[" (D) "8," : "]],[" Where in "]

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