Calculate the magnification of an object placed 6.20 mm from a compound microscope (two conversing lenses) that has a 6.00 mm-focal length objective and a 50.0 mm-focal length eyepiece. The objective and eyepiece are separated by 23.0 cm.

1. What is the total magnification of a compound light microscope with objective lens magnification of 40' and ocular lens of 10'? How did you arrive at your answer? 2. Why is immersion oil necessary at 1,000 but not with the lower power objective?

A 6,000-km undersea glass fiber telephone. line crosses the Atlantic ocean connecting the United States and France. (a) How long does it take for a message to traverse this link? (b) How long does it take for a message to travel from the United States to France by us-ing a satellite link? The satellite is stationed about 22,000 miles above the earth between the United States and France. (c) Will two people having a conversation across these two different links notice the travel delays?

a) Two plane mirrors meet at and angle of 135°. If a light ray strikes one mirror at an angle of 35°, at what angle O does it leave the other mirror? b) A person whose eyes are 1.7 m above the ground stands 2.3 m in front of a vertical plane mirror whose bottom edge is 0.38 m above the floor. What is the horizontal distance x from the base of the wall that is supporting the mirror of the nearest point on the floor that can be seen reflected in the mirror? Hint: It may help to draw a picture for this situation.

. Compute the divergence angle of a Gaussian beam of wavelength 0.8 um and spot size 1 mm. If this beam is aimed at the moon, what is its spot size on the moon's surface? (The distance between the earth and the moon is3.8 x 10 m.) What is its spot size at distances of 1 km and 10 km?

We can see light produced from the Sun but we cannot hear sound produced from the Sun. What characteristic of electromagnetic waves versus sound waves explain this?

1-3. Two 1-km fibers are spliced together.Each fiber has a 5-dB loss and the spliceadds 1 dB of loss. If the power enteringis 2 mW, then how much power is deliv-ered to the end of this combined trans-mission line?

1-6. RG-19/U is used at 100 MHz with an input power of 10 mW. The receiver sensitivity is 1 uW. Compute the maxi-mum length of the communications link.Repeat if a fiber with loss of 5 dB/km replaces the coaxial cable. The fiber system's input power and receiver sensitivity are the same as those of the.coaxial cable system.

Plot numerical aperture versus acceptance angle over the range 0sNA S 0.7. Assume that the refractive index of the surrounding material is 1.0in the calculation.

1-1. Compute and plot the fraction of powertransmitted as a function of the trans-mission-line loss in decibels. Do this onlog paper for a loss range of 0-50 dB.