The endoscopes work on principal of total absorption of light

Q: The index of refraction: always has a value between 0 and 1 has units of m/s vaires depending on…

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Q: Unless otherwise stated, the lens-to-retina distance is 2.00 cm. The print in many books averages…

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Q: If a person covers the top half of camera lens, what effect does this have on the pictures taken?

A: If we cover the half of the lens, then we get a fainter image or an image with less itensity of…

Q: hich of these follows? ) There is a reflected ray only OThere is a refracted ray only ) There is a…

A: When light is incident at a boundary between the two layer, some of the light is reflected and some…

Q: If the focal length of the eye (cornea & lens together) is 5.5 cm, then its power is

A: Given data focal length (f) = 5.5 cm or f = 0.055 m Power of lens is given by (P) P = 1/f so P =…

Q: . A microscope with only one eyepiece is _______________;one with two eyepieces is__________ .

A: A compound microscope is a type of optical microscope that uses visible light as a source. The…

Q: The refractive index of the Vitreous humor is Your answer

A: Refractive index of vitreous humour is 1.336

Q: "Are eyeglasses made with ""high index of refraction"" materials thin or thick?"

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Q: A diverging lens has a focal length of --24 cm. A 7.9 mm tall object is placed 38 cm from the lens.…

A: A concave lens is known as a diverging lens because it diverges the rays after falling on it. A…

Q: An object is 30.0 from a spherical mir Jong the central axis. The absolute value of lat agnification…

A: GivenObject Distance, u=30 cmLateral Magnification, m=12Image produced is inverted

Q: The index or fraction of glass is 1.5. Find the speed of light in it. At what angle will it display…

A: Index of refraction, n = 1.5 Speed of light in glass, v = ?  Critical Angle, θ = ?

Q: total magnification of this lens syStatement is;

A: Given: An extended object is placed at point  O,  10 cm in front of a convex lens L1 and a concave…

Q: The variation of index of refraction with a wavelength is called _________________, and it exists…

A: The variation of index of refraction with a wavelength is called dispersion.

Q: A ray of light is incident on the surface of a block of clear ice at an angle of 40o with the…

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Q: der that its image be 8 mm long

A: Mirror formula 1/f =1/v-1/u

Q: What is the far point of a person whose eyes have a relaxed power of 50.5 D Your answer

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Q: Light is incident from medium 1 to mediu the permeability of medium 2 is 3/4.

A: Given:- The brewster's angle = 55.40 The transmitted angle is =  34.60 The permeability of the…

Q: The optic nerve and the brain invert the image formed on the retina. Why don’t we see everything…

A: Explanation:

Q: Light passes from air into ice with part of the ray reflected and part refracted. The reflected and…

A: Given: medium 1 : air  medium 2 : ice  angle of incidence =i (say) angle of reflection = r (say)…

Q: Discuss the effects of temperature in the measurement of refractive index

A: Refractive index is depends on temperature of the medium. When temperature increases molecules will…

Q: Unless otherwise stated, the lens-to-retina distance is 2.00 cm. Calculate the power of the eye when…

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Q: If the angle of incidence is 30 degrees the angle of reflection is __________ degrees.

A: According to the laws of reflection, the angle of incidence is equal to the angle of reflection.

Q: If the angle of incidence at the far-edge is too large, the light would   escape   not escape…

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Q: How can magnification of a lens calculated?

A: A convex lens is also known as a converging lens while a concave lens is also called a diverging…

Q: The angle of incidence is equal to the angle of reflection is known as what law?

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Q: Calculate The Tefrective index of a substance iF The speed of light in That Medium is b) 1.5 x10° m

A: Refractive index of a substance is given by, u = c/v  where, u is the refractive index of the given…

Q: Refraction occurs when light bends at the interface when light it is transmitted into the interior…

A: Refraction occurs when light bends at surface at interface when going from air to transparent…

Q: A surface 2 feet from a light source is illuminated by a light source having a candle power of 20…

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Q: Use ray tracing to determine the height of the image.

A: Given - Height of the object hoo=2.0 cm Distance of the object doo=7.0 cm Focal length f=12.0 cm…

Q: Mention the Conditions Required for the Total Internal Reflection To Take Place

A: The conditions required to internal reflection takes place are:

Q: What happens when you place the lens of the eye over a newspaper page?

A: if you place your eye over a newspaper page the text seems a blur. One reason for that is, the near…

Q: If the distance from your eye’s lens to the retina is shorterthan for a normal eye, you will…

A: For clear normal vision, the images are formed on the retina. Even if the objects are at different…

Q: - How many times will the incident beam shown in Figure be reflected by each of the parallel…

A: Height,H=1 m Distance between the mirror, L=1 m

Q: A thin converging lens is found to form an image of a distant building 13.1 cm from the lens. If an…

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Q: Why do some people wear bifocal or trifocal eyeglasses?

A: Bifocals and trifocals lenses are using two or three lens power to restore the full range of vision.…

Q: Convex lens are thickest at the middle O True O False

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Q: How to Calculate total magnification of an object?

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