What is dioptre? Explain this.

1.	What is dioptre? Explain this.
Answer» Thank bro hindi bhi Si unit of power Dioptre is SI unit of power of a lens represented by DWhen f=1m,P=1/f =1/1So 1 dioptre is power of lens of focal length one metreInhii ko point me likh de baaki aur dioptremeter k baare me chhap de

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