Science, asked by xettrismriti1, 5 hours ago

the power of a lens is 25D. if a person wants to read a book,how far must the book be held from the lens?

Answers

Answered by jayantapaul644

1

Answer:

25=1/f *100

f=4cm

answer is 4cm

Previous Question

Next Question

Similar questions

Social Sciences, 3 hours ago

The north pole of a magnet repeals the north pole of another magnet. true or false...

English, 3 hours ago

Write a letter to your Uncle who is on a business trip telling him how much you missed him on your birthday...

Math, 3 hours ago

444+4444+44444+444444=...

Math, 5 hours ago

Adding fractions solve : ...

Political Science, 5 hours ago

how many judges are there in criminal court of Switzerland...

Accountancy, 8 months ago

Journalise the following transaction 2019 Jan 1 Started business with cash 3000. Jan 5 Goods purchased for cash 500 Jan 15 sold goods to Rishav Rs 2000 Jan 20 paid telephone bill 500 Jan 25 Purchased good from Akshay 5000.

Chemistry, 8 months ago

Acceleration of centre of mass of system of two blocks connected by light spring shown in figures .

Geography, 8 months ago

ಕಲಬುರಗಿ ಯಾದಗಿರಿ ಲಬುರಗಿ ಬೆಳಗಾವಿ ಮ H ವಾರ ಕೊಪ್ಪಳ ರವಾಡ ಗದಗ ಉತ್ತರ ಕನ್ನಡ ಹಾವೇರಿ ಆಂಧ್ರಪ್ರದೇಶ कर्नाटका 10 जिले वालों कन्नड़ दली ...