If two lenses of `+5` dioptres are mounted at some distance apart, the equivalent power will always be negative if the distance isA. Greater than 40 cmB. Equal to 40 cmC. Equal to 10 cmD. Less than 10 cm

If two lenses of `+5` dioptres are mounted at some distance apart, the

1.	If two lenses of `+5` dioptres are mounted at some distance apart, the equivalent power will always be negative if the distance isA. Greater than 40 cmB. Equal to 40 cmC. Equal to 10 cmD. Less than 10 cm
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If two lenses of `+5` dioptres are mounted at some distance apart, the equivalent power will always be negative if the distance isA. Greater than 40 cmB. Equal to 40 cmC. Equal to 10 cmD. Less than 10 cm

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