Question

Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally...

Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally resolved by a small telescope with a 4.50 cm -diameter objective lens? Assume that the lens is diffraction limited and λ =600nm.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

given

a small telescope with a 4.50 cm -diameter objective lens

then d = 0.045 m

x = 1.2 m apart

λ = 600 nm

λ = 600 X 10-9 m

using equation

x = 1.22 λ D / d

here D value is unknown and have to find

so rewriting the above equation

D = x d / 1.22 λ

D = 1.2 X 0.045 / 1.22 X 600 X 10-9

D = 73770.4919 m

or

D = 7.37704919 X 104 m

or

D = 73.770 km

Add a comment
Know the answer?
Add Answer to:
Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT