Question

divide the square into 10 equal parts by colouring 9 nutrical time so that each nutrical script represents 0.1 sq unit area to the total area. ​

Answer 1

Answer:

(a)

Area of each square, A=1mm

2

u=−9, f=10

v

1

−

u

1

=

f

1

⇒v=−90cm

Magnification, m=v/u=−90/(−9)=10

Area of each square is 10

2

×A=100mm

2

(b)

The magnifying power of the lens is

∣u∣

d

=

9

25

=2.8

(c)

No, magnification of an image by a lens and angular magnification (or magnifying power) of an optical instrument are two separate things. The latter is the ratio of the angular size of the object (which is equal to the angular size of the image even if the image is magnified) to the angular size of the object if placed at the near point (25 cm). Thus, magnification magnitude is ∣(v/u)∣ and magnifying power is (25/∣u∣). Only when the image is located at the near point ∣v∣=25cm, are the two quantities equal.

Answer 2

Step-by-step explanation:

The question is not written property .

and there is no such type answer of your question .