A man 167.68 centimeters tall .is walking directly away from a lamp post fronting a building at the rate of 91.46 centimeters per second. If the lamp is 8 meters above the ground, find a. The rate at which his shadow is lengthening b. The rate at which the tip of the shadow is moving

Q: over a 2.0 mm long line drawn on a sheet of paper. What length of line is seen by someone looking…

A:

Q: In this situation, n = 2.1 and θ₀ = 26°.  Calculate θᵣ, the reflected angle.

A: According to the law of reflection, the angle of incidence will be the same as angle of reflection.

Q: Which of the following phenomenon contributes significantly to the reddishappearance of the sun at…

A: The wavelength of red light is maximum

Q: Light normally travels in straight lines, but it “bends” in an optical fiber. Explain.

A: Given:  Light bends in the optical fibre

Q: A ray of light is travelling from a rarer medium to a denser medium. While entering the denser…

A:

Q: What is the speed of light (in m/s) in water? m/s What is the speed of light (in m/s) in sodium…

A: We know Speed of light in vaccum (c) = 3×108 m/s    (a) Index of refraction of water (nw)=1.33…

Q: Stars twinkle because:   A. the intensity of light emitted by them changes with time B. the distance…

A: When the light passes from one medium to another, the path of light is deviated, this phenomenon is…

Q: A 266 m tall building casts a shadow of length 246 m on level ground. What is the elevation angle…

A: Given : h = 266 m l = 246 m

Q: Light hits a 30 cm thick piece of glass at an angle 60 degrees from the normal. It travels through…

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Q: Light rays from the Sun make a 30°30° angle to the vertical when seen from below the surface of a…

A: SOlution: Given that Light rays from the Sun make a 30°30° angle to the vertical

Q: The critical angle of light going from medium A into medium B is 0. The speed of light medium A is…

A:

Q: A diver shines a flashlight upward from beneath the water at a 42.5 degree angle to the vertical. At…

A:

Q: n = 1.7 and (A beam of light) θ₀ = 17°.  Calculate θᵣ, the reflected angle.

A: From law of reflection,

Q: What is the angle e 135° 4 3 -2 -1 m.

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Q: A ray of light is incident normally on one of the faces of a prism of index of refraction n = 1.49.…

A:

Q: Rays of the Sun are seen to make a 36.0° angle to thevertical beneath the water. At what angle above…

A: Angle, A = 36°  refractive index of water, n = 1.33

Q: When a light ray passes obliquely from air (n = 1) into water (n = 1.33), its speed remains the same…

A:

Q: A submarine on a spy mission is 107.5m horizontally out from the shore and 211.8m beneath the…

A: The situation is shown in figure

Q: A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees.…

A: Given data: Incident angle (i) = 30° nair = 1 nglass = 1.532

Q: The critical angle from rock salt into air is 40.5o. What is the index of refraction for rock sal

A: Given  critical angle from rock salt into air isθ=40.5o

Q: The Cleveland terminal tower building 708 feet tall, is observed by a man 1.5miles away. What is the…

A: 1 mile = 5280 ft Thus, 1.5 mile = 7920 ft The diagram is as follows:

Q: A 6-foot-tall man walks away at the rate of 4 ft/sec from the base of a street light 12 feet above…

A: The representation of the the problem is shown below We can easily see that the 2 triangles are…

Q: A light ray is traveling through the air (n=1.00) at angle= 35 degrees until it enters a lake…

A: Refractive indices of air and water are 1 and 1.33 respectively The angle of incidence is 35°

Q: Light travels through a vacuum at a speed of 3 x 108 m/s. Determine the speed of light in the…

A:

Q: Which of the following colors is bent the least as it exists a prism? a. blue b. yellow c. green…

A: The light with more wavelength will bend least through prism.

Q: How much time does it take for light to travel 1.20 m in water?

A: The index of refraction of a medium is:

Q: A diver shines a flashlight upward from beneath the water (n=1.33) at a 31.7 degree angle to the…

A: Snell’s law is given by

Q: "Light normally travels in straight line , but it ""bends"" in an optical fiber. Explain."

A: Step 1An optical fiber is made up of thin strands of glass that send signals using light.

Q: A flat slab of material (nm = 2.1) is d = 0.85 m thick. A beam of light in air (na= 1) is incident…

A:

Q: For items 34-37. An 18-foot high lamppost casts a shadow. If the angle of elevation from the tip of…

A: The angle of elevation is defined as an angle between the horizontal plane and line of sight.

Q: A spotlight is on the ground 20 ft away from a wall and a 6 ft tall person is walking towards the…

A:

Q: At 3:00 PM a man 135 cm tall casts a shadow 150 cm long. At the same time, a tall building nearby…

A: height of man (h) = 135 cm length of shadow of man (h') = 150 cm length of shadow of building (H') =…

Q: A fish is 1.2 m beneath the surface of a still pond of water. At what maximum angle can the fish…

A: The below diagram shows , refraction of light from water to air . Given , refractive index of…

Q: A light beam coming from an underwater spotlight exits the water ( n= 1.33) at an angle of 55.0. At…

A:

Q: The direction that a light wave bends once it enters the refracted medium depends on a. The index of…

A: The direction that a light wave bends once it enters the refracted medium depends on  The angle of…

Q: 1. Find 6,. 20° 2. To show incoming & outgoing rays are parallel, find 0. 20° 3. Find d. 0.504 m

A: as per our guidelines we are supposed to answer up to 3 subparts of a question. Kindly repost…

Q: If you see a rainbow near the time of sunset, where in the sky will the rainbow be? a. toward the…

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Q: A ray of light strikes a polished surface at an angle of 37˚. What is the the angle of reflection…

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Q: A ray of light in air is approaching the boundary with a layer of crown glass at an angle of 42.0…

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Q: Have you experienced walking on a street and noticed an image of a small billboard from afar?…

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Q: Nemo swims 12.5 [m] deep into the sea (nw 1.38). What is the apparent depth of nemo as seen by Darla…

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Q: BỊ A light ray leaves a source directed at an angle A = 7 from the vertical. The ray is reflected…

A: Given:- angle A= 7 from the vertical  angle B= 16 from the horizontal  Find:- The angle between the…

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.