In an experiment with a convex lens. The plot of the image distance (v*) against the object distance (μ prime) measured from the focus gives a curve v prime μ prime=225. If all the distances are measured in cm. The magnitude of the focal length of the lens is cm.

Question

In an experiment with a convex lens. The plot of the image distance (v*) against the object distance (μ prime) measured from the focus gives a curve v prime μ prime=225. If all the distances are measured in cm. The magnitude of the focal length of the lens is cm. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

v u=f2 (by Newton's formula) f2=225 f=15 cm

Q. In an experiment with a convex lens. The plot of the image distance $(v^{*})$ against the object distance $(μ^{'})$ measured from the focus gives a curve $v^{'} μ^{'} = 225$ . If all the distances are measured in $c m$ . The magnitude of the focal length of the lens is ___ $c m$ .

$vu = f^{2}$ (by Newton's formula)
$f^{2} = 225$
$f = 15 c m$

Q. In an experiment with a convex lens. The plot of the image distance (v∗) against the object distance (μ′) measured from the focus gives a curve v′μ′=225. If all the distances are measured in cm. The magnitude of the focal length of the lens is ___ cm.

vu=f2 (by Newton's formula) f2=225 f=15cm

Q. In an experiment with a convex lens. The plot of the image distance $(v^{*})$ against the object distance $(μ^{'})$ measured from the focus gives a curve $v^{'} μ^{'} = 225$ . If all the distances are measured in $c m$ . The magnitude of the focal length of the lens is ___ $c m$ .

$vu = f^{2}$ (by Newton's formula)
$f^{2} = 225$
$f = 15 c m$