Physics
The diagram below shows a lens as a combination of a glass slab and two prisms.
(i) Name the lens formed by the combination.
(ii) What is the line XX' called?
(iii) Complete the ray diagram and show the path of the incident ray AB after passing through the lens.
(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. Label the point as F. What is this point called?
Refraction Lens
39 Likes
Answer
(i) The lens formed by the combination is a convex lens.
(ii) The line XX' is called the principal axis.
(iii) Below diagram shows the path of the incident ray AB after passing through the convex lens:
(iv) The point F is called a focal point.
Answered By
26 Likes
Related Questions
In figure (a) and (b), F1 and F2 are the positions of the two foci of thin lenses. Draw the path taken by the light ray AB after it emerges from each lens.
(a) Figure a
(b) Figure b
A beam of light incident on a thin concave lens parallel to its principal axis diverges and appears to come from a point F on the principal axis. Name the point F. Draw a ray diagram to show it.
A parallel oblique beam of light falls on a
(i) convex lens,
(ii) concave lens.
Draw a diagram in each case to show the refraction of light through the lens.
The diagram below shows a lens as a combination of a glass slab and two prisms.
(i) Name the lens formed by the combination.
(ii) What is the line XX' called?
(iii) Complete the path of the incident ray AB after passing through the lens.
(iv) The final emergent ray either meets XX' at a point or appears to come from a point on XX’. Label it as F. What is this point called?