Physics, asked by ashwintomar123, 8 months ago

two lenses of power -3.5D and +1D are placed in contact. find the total power of the combination of lens calculate the focal length of this combination

Answers

Answered by sidekick

1

Answer:

Total power of the lens = -3.5D + 1D = -2.5D

Focal length = 1/P = 1/-2.5D = -10/25 = -2/5

therefore f = -2/5 = -0.4m

Explanation:

Previous Question

Next Question

Similar questions

Chemistry, 4 months ago

2100 110 120 130 140 1501 160 Determine energy and wave-lenght of radiation having frequency -5 1.5 X 10 Hz.

Hindi, 4 months ago

khushi ka mahtav ke upar ek anuched...

Math, 4 months ago

in 5 years the interest on rupees 55000 is more than the interest on rupees 40000 by rupees 15000.find the rate of interest...

Science, 8 months ago

Which of the following substances do not produce flame on burning? LPG, Candle, Magnesium, Camphor, Charcoal, kerosene stove, Wood.

English, 8 months ago

A. Answer the following questions, 1. Which words from the poem tell us about the following? (i) Times of day (ii) Roads (iii) Motion or interaction (iv) Weather conditions or geographical features Which park is the poet referring to? 2. 3. What is the ring? 4. What does gentility refer to? 5. What is the rhyming scheme of the poem? 6. How would you describe the mood of the poet in this...

Hindi, 11 months ago

in this app how to write in Hindi words...

French, 11 months ago

Q2. Trouvez la question: (i) Ils habitent à Paris. (ii) Ce sont des pommes. (iii) Mon amie est intelligente. (iv) Si, j'ai soif. (v) Oui, il est beau. (vi). Il s'appelle Paul...

Math, 11 months ago

hello friends only 3questions pls answer l will mark u immediately pls help me it's urgent solve all the questions above in this pic no spam or wrong answers otherwise i will mark u be ready for next question...