Question

(a)How would you distinguish plane , concave and convex mirrors without touching them

.Give reason .

(b)Questions numbers (i) to (iv) are based on the table given below .Study the table of object

and image distance of a concave mirror and answer the following questions :

S.No Object distance (u)(in

cm)

Image

distance(v)(in cm)

1 -90 -18

2 -60 -20

3 -30 -30

4 -20 -60

5 -18 -90

6 -10 -100

(i)What is the focal length of the concave mirror ?Give reason in support of your answer.

(ii)Write the serial number of the observation which is not correct .How did you arrive at this

conclusion?

(iii)The approximate value of magnification in case of S.No 4

(a)-2 (b) -3 (c) +3 (d) +2

(iv) The image formed in case of S.No 2 is

(a)virtual and enlarged (b) virtual and diminished

(c)real and diminished (d) real and enlarged ​

Answer 1

Answer:

hey

its long answered

it is very long

it takes time