Question

2. Draw ray diagrams using concave mirror and convex lens when the object is placed(4) a)at infinity b)beyond c or 2F1 c)at C or 2F1 d)between C (2F1) and F write nature and position of the image also

Answer 1

Ray Diagrams of Concave Mirror:

a) Object at Infinity

• Image is formed at the focus.

• Image is diminished, inverted and real.

b) Object beyond 2F

• Image form in between centre of curvature and focus.

• Image is real, inverted and diminished.

c) Object at 2F

• Image is formed at the centre of curvature.

• Image is real, inverted and same size as that of the object.

d) Object between 2F and F

• Image is formed beyond centre of curvature.

• Image is real, inverted and magnified.

Ray Diagram of Convex Lens:

a) Object at Infinity

• Image is formed at principal focus

• Image is real, inverted and diminished.

b) Object beyond 2F

• Image is formed in between centre of curvature and principal focus.

• Image is real inverted and diminished.

c) Object at 2F

• Image is formed at the centre of curvature.

• Image is real inverted and has same size as that of the object.

d) Object between 2F and F

• Image is phone beyond the centre of curvature.

• Image is real inverted and magnified.

Refer to attached diagram.

Answer 2

Answer:

object between 2f and f