A lighthouse rises 49ft above the surface of a cliff that extends 19ft from its base. A sailor from a ship sees the top at an angle of 30 degrees. If the sailor's eye level is 14ft above water, how far is the ship from the rocks?

Q: Find the refractive index of the glass in the figure below.  (Take ? = 20°, y = 6.5 cm, and x = 4.6…

A: Given, y = 6.5 cm x = 4.6 cm θ = 20°

Q: Optics are used in Metrology for:     Magnification     Alignment     Measurement…

A: Optics are used in Metrology for:   1 Magnification   2 Alignment   3 Measurement   4…

Q: An object is placed 3.0 cm in front of a 5.0 cm focal length lens. In the image attatched, each…

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Q: A person is having farsightedness vision defect because, а. the eye become too long b. the eye…

A: Here given a person having farsightedness vision defect. We have to define the reason.

Q: A diver dives into the sea (nw=4/3) that is 8 m deep. Solve for the apparent depth of the diver as…

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Q: Light rays originating from an object pass through two lenses in combination. The lateral…

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Q: When viewed through a magnifying glass, a stamp that is 1.1 cm wide appears upright and 6.7 cm…

A: Answer :-  The equation for magnification is -       M = - di / do  where M is the magnification, di…

Q: A thin, converging lens has a focal length of 9.9 cm. If an object is placed 34 cm from the lens,…

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Q: When viewed through a magnifying glass, a stamp that is 1.4 cm wide appears upright and 6.9 cm wide.…

A:

Q: When viewed through a magnifying glass, a stamp that is 2.3 cm wide appears upright and 4.9 cm wide.…

A: Object height =2.3cm Image height=+4.9cm Magnification=image heightObject height=4.9cm2.3cm=2.13

Q: An object with a height of 4.0 cm is placed 30.0 cm from a lens.  The resulting inverted image has a…

A: Given data:  Object height = 4.0 cm Object distance = 30.0 cm Image height = 1.5 cm Required: The…

Q: An object of height 4.25 cm is placed at a distance of 22.5 cm from the convex lens. Whose focal…

A: We will use lens formula and then formula to calculate magnification.  Object distance is negative…

Q: When an object 1.15 cm tall is placed 12 cm from a lens, the lens produces an upright image of the…

A: GivenHeight of the object ho=1.15 cmDistance of the object u=12 cmHeight of the image hi=5.75…

Q: At what angle ϕ should the laser beam in the figure be aimed at the mirrored ceiling in order to hit…

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Q: If the index of refraction of a medium is 2.40 and the angle of incidence is 14.6°, what is the…

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Q: If f = 0.5 m for a glass lens, what is the power of the lens?

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Q: A convéx lens of focal length 10.0 cm is placed in contact with a convex lens of 15,0 cm focal…

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Q: A light ray passes through a glass lens, shown in cross section in the figure below. Find the angle…

A: Given :    θ 1= 41°, θ 2=22° , θ 3=27°

Q: The Law of Reflection The reflected angle of light is dependent on:  (Circle all that apply:) 1.…

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Q: A ray in air is incident on a glass plate whose index of refraction is 1.26. The angle of refraction…

A: Write the given values with the suitable variables. n1=1n2=1.26θ2=θ12 Here, n1, n2, θ2, and θ1 are…

Q: The focal length of a diverging lens is 12cm. An object is placed 5cm in front of the lens. The…

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Q: A person has good vision has near point of 0.4 m and the like read at distance of 0.25 m what his…

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Q: An observer to the right of a mirror - lens combination sees 2 reflections of an object. One…

A: The observer is to the right of the mirror. The reflections are magnified 1.5 times i.e. m = 1.5 The…

Q: A converging lens is used to focus light from a small bulb onto a book. The lens has a focal length…

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Q: A light ray passes through a glass lens, shown in cross-section in the figure below. Find the angle…

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Q: If the lateral magnification of an object is 1.53 and the focal length the converging lens is 16.2…

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Q: Under what circumstances will an image be located at the focal point of a lens or mirror?

A: When the object is positioned at infinity, light rays parallel to the mirror or lens axis meet or…

Q: Suppose the object is held 7.50 cm from a convex lens of focal length 10.0 cm, such as a typical…

A: focal length, f = + 10cm  distance of object, do= - 7.5 cm

Q: At a particular time of day, the Sun's elevation angle is 60° above the horizon. For a diver who is…

A: The sun is at angle 60° above to the horizon. So angle of incident is  i = 90-60 = 30° The…

Q: When a beam of light hits a mirror, the angle of reflection A.  Must equal the incident angle B.…

A: when a light fall on a mirror then angle between incident rays and normal known as incident angle…

Q: Q10) The image is focused on the retina of the objects by Change the thickness of the lens change…

A: We need to comment on how the image is focused on the retina by the eye.

Q: The speed of light in air is 3x10^8 m/s and refractive index of medium is 1.5. Calculate the speed…

A: Given data: Speed of the light in air (c) = 3 × 108 m/s Refractive index of medium (n) = 1.5…

Q: light ray passes through a glass lens, shown in cross section in the figure below. Find the angle of…

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Q: When viewed through a magnifying glass, a stamp that is 2.6 cm wide appears upright and 4.9 cm wide.…

A:

Q: A man shines a flashlight from a boat into the water, illuminating a rock as in the figure below.…

A: Solution:

Q: When viewed through a magnifying glass, a stamp that is  2.8 cm  wide appears upright and  4.8 cm…

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Q: An upward vertical incident ray is aimed towards a plane mirror attached to the wall and ceiling.…

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Q: Which of the following statements if true for a refracting telescope? The eyepiece is a diverging…

A: A refracting telescope uses lens as it's objective to form an image. A reflective telescope instead…

Q: An object is 20 cm to the left of a leens of focal length +10 cm. A second lens, of focal length…

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Q: An underwater scuba diver sees the Sun at an apparent angle of 45° above the horizontal. What is the…

A: Given:

Q: A double convex lens of glass of refractive index 1.6 has its both surfaces of equal radii of…

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Q: Which of the following statement is/are TRUE about an eye? A. Iris changes the thickness of the eye…

A: Given question is type of true and false statement, we have to tell that how many options are true.

Q: a converging lens has a focal length of 4.5cm. it forms an inverted image with an image distance of…

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Q: When drawing a ray diagram, "f" stands for length. Another name for a converging lens is a lens. A…

A: When drawing a ray diagram, 'f' stands for focal length.   Another name for a converging lens is a…

Q: Radii of curvatures of a lens are 20 cm and 30 cm. The index of refraction of the lens material is…

A: Assuming that the given lens is a convex lens. Given that:- R1=20cmR2=-30cmμ=1.5f=?

Q: The headlights of an automobile are set such that the beam drops 1 in for each 28 ft in front of the…

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Q: When viewed through a magnifying glass, a stamp that is 2.7 cm wide appears upright and 6.8 cm wide.…

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Q: A certain statue has a height of 2.5 m. When looked through a lens, the real image that is generated…

A: As the image is real .Real image is always inverted image  so height of image will be negative.…

Q: The image of the coin in the figure is magnified by a factor of  M = 4.9  times, and is a distance…

A: The magnification, M=4.9   The distance of the image from the lens, d=6.7 cm