Question

12. Fill in the blanks:

a) Focal length of a concave mirror is ----------------(negative/positive)

b) If the image is formed in front of the mirror, then the image distance will be--------------

(negative/positive/ neither positive nor negative)

13. Direction: Match Column I with Column II.

Column I Column II

(i) Ray through centre of

curvature (A) Reflected parallel to principal axis

(ii) Ray through focus (B) Converge at focus

(iii) Rays from infinite distance (C) Retracing in mirrors

14. An object 4 cm in size is placed at a distance of 25 cm from a concave mirror of

focal length 15 cm. Find the position, nature and height of the image.

15. Size of image of an object by a mirror having a focal length of 20 cm is observed to

be reduced to 1/ 3rd of its size. At what distance the object has been placed from

the mirror? What is the nature of the image and the mirror?

(SECTION: C)

16. Draw ray diagrams showing the image formation by a concave mirror when an

object is placed

(a) between pole and focus of the mirror.

(b) between focus and center of curvature of the mirror.

(c) at center of curvature of the mirror.

(d) at infinity.

(e) at Focus.​

Answer 1

Question 12

a. positive

b. negative

Question 13

a. retracing in mirrors.

b. reflected parallel to principal axis.

c. converge at focus.

Question 14

this question answer in image

height of image is -6 cm

Hope its helps you

please mark me as brainliest and follow me

Answer 2

Answer:

Niklo Madarchoto

Explanation:

Mera answer dekhne wala har koi madarchot hai