Math, asked by safarajakherada, 6 months ago

(3) Give the type and power of lens having focal length
40 cm ?
(Chp 10)

Answers

Answered by Tsubhiksha

0

Answer:

c

Step-by-step explanation:

Given,

f

1

=+40cm

f

2

=−25cm

Power, P=

f

1

The power of combination,

P=

f

1

1

+

f

2

1

P=

+40cm

100

+

−25cm

100

P=−1.5D

The correct option is C.

Answered by ismartsunny

0

Answer:

Power of convex lens is + 2.5 D.

Previous Question

Next Question

Similar questions

Math, 3 months ago

5 M/Min To Km/Sec Pls Fast!!

Biology, 3 months ago

proper defination of budding in simple words ...

Social Sciences, 3 months ago

Read the given paragraph and interpret on it When we realize that even though the level of income is important, it is an inadequate measure of the level of development, we begin to think of other criterion. There could be a long list of such criteria but then it would not be so useful. What we need is a small number of the most important things Health and Education indicators, such as...

English, 6 months ago

s) A Cricket Match200 word...

Math, 6 months ago

ABCD is a cyclic quadrilateral such that AB is a diameter of the circle circumscribing it and ∠ADC = 140°, then ∠BAC is equal to : * 1 point...

Math, 11 months ago

(CosecA -cotA)^2=1-cosA÷1+cosA...

English, 11 months ago

Discuss with your partner the various hazard and risk that a mountaineer...

Physics, 11 months ago

define thermal expansion of liquids ...