Basic Maths and Units and DimensionsHard

Question

The principal axis of a convex lens is along x axis. The coordinates of an object and image are (-20cm, 2cm) and (25cm, -1cm). Lens is located at :-

Options

A.x = + 10 cm
B.x = -2.5 cm
C.x = 2 cm
D.x = - 3 cm

Solution

     
m = ⇒ u = 2v
Distance = u + v = 45
2v + v = 45
v = 15 cm
Position of lens x = + 10 cm

Create a free account to view solution

View Solution Free
Topic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions

More Basic Maths and Units and Dimensions Questions

The dimension of specific resistance is :-...Dimension M1LoT-2 represents -...A boy of height 1.5 m with his eye level at 1.4 m stands before a plane mirror of length 0.75 m fixed on the wall. The h...Four graphs are shown in the figure :-(a) (b)(c) (b)...If the velocity of a particle is υ = At + Bt2, where A and B are constants, then the distance travelled by it betwe...