36. A convex, spherical glass lens is in contact with a horizontal glass plane. The lens is illuminated from above (along its axis) with light that has a wavelength of 489 nm. When viewed from above, a pattern of fringes is observed, with a central dark circle of diameter - 6.9 mm. What is the radius of curvature of the lens? Hint: Consider the boundary of the dark circle to be at the location of the first bright ring. A) 9,7 m B) 24 m 49 m D) 97 m E) 190 m

please help: Antireflection Coating A glass lens (nglass=1.52) has an antireflection coating of MgF2(n=1.38). A)  For 548-nm light, what minimum thickness of MgF2 will cause the reflected rays R2 and R4 (see figure) to interfere destructively, assuming normal incidence? Express your answer to three significant figures.   B)  Interference will also occur between the forward-moving rays R1 and R3 in the figure. What minimum thickness of MgF2 will cause these two rays to interfere constructively? Express your answer to three significant figures.

Q1:a) Parallel rays of green mercury light with a wavelength of 546 nm pass through a slit covering a lens with a focal length of 60.0 cm. In the focal plane of the lens the distance from the central maximum to the first minimum is 10.2mm. What is the width of the slit? b) Unpolarized light of intensity 20 W /cm² is incident on two polarizing filters. The axis of the first filter is at an angle of 25.0° counterclockwise from the vertical and the axis of the second filter is at 62.0°counterclockwise from the vertical. What is the intensity of the light after it has passed through the second polarizer?

You've got binoculars with 28-mm-diameter lenses. You're observing two bees on a flower 840 m distant. What's the minimum separation between the bees for you to be able to resolve them as two distinct insects? Assume visible light with 590-nm wavelength.

Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally resolved by a small telescope with a 3.70 cm -diameter objective lens? You may want to review (Pages 1011 - 1014) Part A Assume that the lens is diffraction limited and A = 600 nm. Express your answer with the appropriate units. HẢ Value Units

A laser beam is incident at an angle of 30.00to the vertical onto a solution of blood plasma in water. If the beam is refracted to 19.240 to the vertical: What is the index of refraction of the blood plasma solution?  Suppose the light is red, with wavelength 632.8 nm in a vacuum. Find: Its wavelength. Its frequency. Its speed in the solution.  The critical angle for the blood plasma solution when surrounded by air

25. A soap bubble appears green (λ = 540 nm) at the point on its front surface nearest the viewer. What is the smallest thickness the soap bubble film could have? Assume n = 1.35. n=1.35- Incident ray. Reflected rays' Outside air n = 1.00 Bubble interior n = 1.00