Three students measured the focal length of a convex lens using parallel rays from a distant object. All of them measured the distance between the lens and the inverted image on the screen.(i) Student A saw a sharp image on the screen and labelled the distance as f1(ii) Student B saw a slightly larger blurred image on the screen and labelled the distance as f2 (iii) Student C saw slightly smaller blurred image on the screen and labelled the distance as f3The relation between the three measurements would most likely be(1) f1 = f2 = f3 (2) f1 < f2 < f3 (3) f3 < f1 < f2 (4) f1 < f2 and f1 = f3

Three students measured the focal length of a convex lens using parall

1.	Three students measured the focal length of a convex lens using parallel rays from a distant object. All of them measured the distance between the lens and the inverted image on the screen.(i) Student A saw a sharp image on the screen and labelled the distance as f1(ii) Student B saw a slightly larger blurred image on the screen and labelled the distance as f2 (iii) Student C saw slightly smaller blurred image on the screen and labelled the distance as f3The relation between the three measurements would most likely be(1) f1 = f2 = f3 (2) f1 < f2 < f3 (3) f3 < f1 < f2 (4) f1 < f2 and f1 = f3
Answer» Three students measured the focal length of a convex lens using parallel rays from a distant object. All of them measured the distance between the lens and the inverted image on the screen. (i) Student A saw a sharp image on the screen and labelled the distance as f₁ (ii) Student B saw a slightly larger blurred image on the screen and labelled the distance as f₂ (iii) Student C saw slightly smaller blurred image on the screen and labelled the distance as f₃ The relation between the three measurements would most likely be (1) f₁ = f₂ = f₃ (2) f₁ < f₂ < f₃ (3) f₃ < f₁ < f₂ (4) f₁ < f₂ and f₁ = f₃