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A glass sphere of refractive index 1.5 forms the real image of object O at point I as shown in the figure when kept in air of refractive index 1. If the value of x is kR. Find k |
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Answer» Consider first refraction at point `N` `1.5/V-1.0/(-R)=(1.5-1.0)/(+R)implies1.5/v=1/(2R)-1/Rimpliesv=-3R`  Consider second refraction at point `M`, for this `I`, wil behaves normal object so `1.0/v-1.5/(-5R)=(1.0-1.5)/(-R)` `implies1/v+3/(10R)=1/(2R)=5/(10R)` `implies 1/v=5/(10R)-3/(10R)=1/(5R)` `implies v=5R` `impliesx=5Rimpliesk=5` |
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