ANSWER ALL FOR 50 POINTS
1. Where should the object be placed in front of a convex mirror to get its highly diminished image?
(i) At F
(ii) At C
(iii) At infinity
(iv) Between C and F
2. State whether the following statement is true or false. Give reason.
We cannot get a virtual and erect image by using a concave mirror.- _________
3. Define the following terms for spherical mirrors:
(i) Pole
(ii) Centre of curvature
(iii) Principal axis
4. Find the focal length of a convex mirror whose radius of curvature is 32 cm.
5. Complete the path of the reflected light rays in the following diagrams. Draw the diagrams and insert the pics of the diagrams here.
6. Draw ray diagrams to show the principal focus of,
(i) Concave mirror
(ii) Convex mirror
Answers
Answer 1
(iii) at infinity
Answer 2
False
when object is placed between pole and focus of concave mirror then a virtual and erect image is formed.
Answer 3
i) Pole: Pole is defined as the centre of aperture of the spherical mirror.
ii) Centre of curvature : It is defined as the centre of the hollow sphere of glass of which the mirror is a part.
iii) principal axis: defined as a line going through the centre of the mirror that is exactly perpendicular to the surface of the mirror.
Answer 4
Radius of curvature = 2 × focal length
so, f = R / 2
f = 32 / 2 cm = 16 cm
hence its focal length will be 16 cm.
Answer 5
@you had not attached the figure hence can't be answered.
Answer 6
Refer to the attachement for ray diagrams
first image is showing the focus of concave mirror
second one of convex mirror.
Answer:
Answer all for 25 points ok