Physics, asked by suchipuli, 10 months ago

two lenses of focal length - 20 cm and + 10 cms are put in contact. Find power of combination?

Answers

Answered by sumanthmaddela2004

1

Answer:

focal length - 20 cm and + 10 cm

=1/d

=1/-20

=1/10

Previous Question

Next Question

Similar questions

Math, 5 months ago

Arrange the following steps to construct the quadrilateral ABCD with BC=4.5cm, AB=3.5cm, CD=3cm, i) With B as centre draw an arc of radius 3.5 cm intersecting BX at a point A. Similarly with C as centre, draw an arc of radius 3 cm intersecting CY at point D. ii) Draw < CBX =90 deg at point B and iii) Join DA. iv) Draw a line segment of length 4.5cm and name it as BC.

Environmental Sciences, 5 months ago

briefly describe about uses and chemical composition of menthe...

Math, 5 months ago

Which out of the following are expressions with numbers only? a) (6 x5)-5+10-30 b) 2x c) (3 x5)-8y d)3-3n...

Biology, 10 months ago

A diabetic person has specific dietry needs. Guide your mother to include two raw food items in your father's diet (who is diabetic) and two food items not to be used ...

India Languages, 10 months ago

hmmmm can u tell me who make paris.. and what is the reason...

Social Sciences, 1 year ago

Which crop out of sugarcane Bajra or wheat are kharif crops...

Science, 1 year ago

how does a good drainage system prevent water logging?

Hindi, 1 year ago

' पनही ' शब्द का तत्सम रूप है:। 1) ताम्बुल 2) पर्ण 3) उपानह‌ 4) पर्णहि...