Q 9.20 Solution Ray Optics| CBSE Std 12 Physics

[@naphimuthliang7438]

While using the lens formula shouldn't the value of u be -u by sign convention..,..?if that's so how will the u's on the numerator be cancelled??

[@itzprishu]

U1 into u2 = 90 ??how

[@MakeMeScientific]

Please check equation 1 @4:01