Physics, asked by nishantmalik1, 1 year ago

an eye specialist prescribe a no. +4.5D to a person for his glasses which is nature of lens and what is its focal length

Answers

Answered by billu11

7

D=1/f
4.5=1/f
f=0.222 cm

Previous Question

Next Question

Similar questions

English, 7 months ago

Suppose you are the principal of you school .Now write how you will work for the betterment of your students...

Math, 7 months ago

$2x+3=x$ use trial and error method to solve the equation . and come up with the answer [x=(-3)] {7th grade}...

English, 7 months ago

any one novel or book that you have enjoyed reading . Prepare a Synopsis of the novel or book that you have enjoyed reading . It should include the major events and links between them as described in the novel. You may prepare a chapter wise outline first and put outline together to put a brief Synopsis...

Physics, 1 year ago

find the percent increase or dec rease in the following 1.the length of rod changes from 4cm to 6cm 2.the weight of a person changes from 80kg to 60kg.

Hindi, 1 year ago

Moral of the story jamun ka ped...

Chemistry, 1 year ago

how does boiling point of hydrocarbons change with increasing molecular masses and why?

Science, 1 year ago

Why people do we have two eyes for vision ? not just one...

Geography, 1 year ago

Name a region in India which receives rainfall both in summer and winter.