# phys

posted by .

What is the minimum lens size (in meters) that will permit just resolving 2 stars 1.1 second apart using light of 510nm?

• phys -

= 1.22 (wavelength)/(diameter)

1.1 arc second = [1.1 sec/(3600 sec/deg*)]*1 rad/57.3 deg = 5.33*10^-6 rad

5.33*10^-6 = 1.22*510*10^-9/D

Solve for diameter D

• phys -

Is D~11.7*10^-2

• phys -

i solved D~11.7*10^-2, but the answer key is .0956

## Similar Questions

1. ### AP PHYSICS

An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^-13W/M^2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5nn and the light …
2. ### physics-repost

An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^-13W/M^2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5nn and the light …
3. ### physics

An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^-13 W/m^2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5mm and the light …
4. ### Physics

Problem 19.33 Two light bulbs are 1.0 m apart. Part A - From what distance can these light bulbs be marginally resolved by a small telescope with a 3.0cm -diameter objective lens?
5. ### physics

Two stars are 3.80 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.19 m and just detects these stars as separate objects. Assume that light of wavelength 550 nm is being observed. …
6. ### Physics

Two stars are 8 light years from earth (a light year is the distance light travels in one year). The 550 nm light from the two stars can be barely distinguished in the diffraction pattern of 90 cm wide single slit. How far apart are …
7. ### physics

Two stars are 2.4 × 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.72 m and just detects these stars as separate objects. Assume that light of wavelength 590 nm is being …
8. ### physics

Two stars are 4.40 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.03 m and just detects these stars as separate objects. Assume that light of wavelength 550 nm is being observed. …
9. ### Phys-Lens Question

A double lens system is made of +35.0 cm lens (lens #1) and a - 26.0 cm lens (lens #2). Lens #1 is placed at x = 0 cm on a meter stick and lens #2 is placed at x = 30.0 cm. Where on the meter stick will the final image be formed when …
10. ### Math

The intensity of light passing through a lens can be found using the formula I=Io - Io / csc^2 theta, where Io is the intensity of the light coming in, I is the intensity of the light that emerges or goes out of the lens, and theta …

More Similar Questions