Optics Answers

Components of some computers communicate with each other through optical fibers having an index of refraction n = 1.547. What time (in ns) is required for a signal to travel 0.142 m through such a fiber?

answer to 3 decimal places

There was a major collision of an asteroid with the Moon in medieval times. It was described by monks at Canterbury Cathedral in England as a red glow on and around the Moon. How long after the asteroid hit the Moon, which is 8.71 × 10⁵ km away, would the light first arrive on Earth?

2 decimal places

What is the angle of refraction in a medium if the angle of incidence in air (n=1.00) is 48˚ and the index of refraction of the medium is 1.58?

In an experiment with Michelson's Interferometer 99 fringes cross the field of view when the movable mirror is displaced through 0.02759 mm. Calculate the wavelength of manochromatic light used.

Randomly polarized light of intensity i0 incident on two sheet polarizers . The transmission axis of the first polarizer is vertical that of The second makes a 30 angle with the vertical The intensity and polarization State of the light after passing through the two is....

A microscope has an objective of focal length 1.0cm and an eyepiece of focal length 8.0cm.Both lenses are separated by a distance of 12.0 cm. A tiny object 1mm long is placed 1.2cm from the objective. Find the position and size of the final image

What of using this method ???

solution

μ = sin i ÷ sin r→

1.5 = sin (60 / sin r →

1.5 =0.8660 / sin r →

1.5 ★ sin r = 0.866→

sin r = 0.866/1.5→

sin r = 0.5773→

r = sin inverse of 0.5773→

r = 35.2.

CALCULATE THE DISTANCE BETWEEN SUCCESSIVE POSITION OF THE MOVABLE MIRROR OF MICHELSONS INTERFEROMETER GIVING BEST FRINGES OF SODIUM SOURCE HAVING LINES 5896 A° AND 5890 A°.

a convex mirror is used to reflect light from an object placed 30 cm in front of the mirror if the focal length of the mirror is 20cm then the location of the image should be

The sun has a radiated power of 3.9 · 1026 W, a surface temperature of 5800 K and a radius of 6.96 · 108 m. Examine whether the sun radiates like a black body?