10. Why is oil used under the oil immersion lens instead of water?(1 Point)O oil is thicker than glass and so it will focus the image betterO Oil is less dense than water and therefore it will help focus the image betterO oil and glass both refract light at the same degree and so oil will help focus the image betterO oil and air both refract light at the same degree and so oil will help focus the image betterO All of the above

A microscope can be referred to as a magnifying object playing a crucial role in providing medium to…

Answered: 10. Why is oil used under the oil…

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter16: Fiber Optics And Lasers In Bioinstrumentation

Section: Chapter Questions

Problem 9P

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1. What happens to your image if you try to magnify it using 40x or 100x?
5. Which objective lens provides the greatest field of view? a. high. b. 100X c. low d. This depends on if the specimen is stained
13.The capacity of an optical system to distinguish or separate two adjacentobjects or points from one another is known asa. the real image.b. the virtual image.c. resolving power.d. numerical aperture.e. power.
1. What total magnification will be achieved if the 10× eyepiece and the 10× objective are used?___________
1. The resolving power of a microscope is a function ofa. the magnifying power of the lenses.b. the numerical aperture of the lenses.c. the wavelength of light.d. Both (a) and (b) are correct.e. Both (b) and (c) are correct.
A typical incandescent lightbulb emits approximately 3 x 1018 visible-light photons per second. Your eye, when it is fully dark adapted, can barely see the light from an incandescent lightbulb 10 km away. How many photons per second are incident at the image point on your retina? The diameter of a dark-adapted pupil is 6 mm.
Imagine someone is ooking at the letter e in newsprint through their microscope. All they can see is part of the e but they want to see the whole thing. What should they do? Group of answer choices 1. open the iris 2. use a higher objective 3. close your iris 4. use a lower objective
1. What is the wavelength used for the spectrophotometer? What is the principle of the spectrophotometer?
Very short pulses of high-intensity laserbeams are used to repair detached portions of the retina of the eye. Thebrief pulses of energy absorbed by the retina weld the detached portionsback into place. In one such procedure, a laser beam has a wavelengthof 810 nm and delivers 250 mW of power spread over a circularspot 510 mm in diameter. The vitreous humor (the transparent fluid thatfills most of the eye) has an index of refraction of 1.34. If the laser pulses are each 1.50 ms long, how much energy is delivered to the retina with each pulse?
1. How is ultraviolet light used in forensic photography? 2. How is infrared light used in forensic photography?
4. (a) David cannot view objects clearly if they are further than 0.80 m. His lens-to-retina distance is 2.0 cmWhat is the problem with his eyes? What should be the optical power of his corrective glasses? Neglectthe distance between the glasses and his eyes.
1) In the amniote eye, light rays are bent by the greatest amount when they pass from the _______." A) cornea into the lens B) air into the cornea C) aqueous humor into the lens D) front of the lens to the back of the lens 2) When a light ray passes into lens at a more perpendicular angle _____ then when it passes into the lens at a more oblique angle. A) it undergoes more bending B) it undergoes less bending C) the amount of bending the light ray undergoes is independent of the angle at which it hits the lens

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