According to Huygens, how does every point on a wavefront behave?

Q: A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in…

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Q: Why do wet objects normally look darker than the same objects when dry?

A: When light is incident on the wet objects, it undergoes internal reflection multiple times in the…

Q: plane wavefront is incident at an angle of 30° on the surface of the glass. Calculate the angle of…

A: Given : Angle of incidence, i = 30° Angle of refraction, r = 19°

Q: When you observe a mirage on a hot day, what are you actuallyseeing when you gaze at the “pool of…

A: Step 1 Mirage is the natural phenomenon that we generally see in the arid region. The water appears…

Q: Can air make shadows? Explain it.

A: Air can make shadows.

Q: Diffraction explains transmit images over long distances the spreading of light waves from a door…

A: Diffraction is the phenomenon by virtue of which waves will spread around obstacles. Diffraction may…

Q: A fishing vessel with the green light on its deck, 7.5 meters above the water, disappears from the…

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Q: Does Huygens' principle apply to sound waves? To water waves? Explain.

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Q: Why does different material have different index of refraction?

A: Different material possess different refractive indices because of each material will have different…

Q: How can a clear object be transparent and visible at the same time?

A: When we put the pure water in a extra clear glass, it makes transparent system of glass and water.…

Q: The critical angle of oil-air boundary is 29°. Which ray of light shown below will undergo total…

A: critical angle for oil- air boundary = 29o

Q: Consider a layer of Oil, Glass, and Air where the oil/glass boundary is parallel to the glass/air…

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Q: Derive the law of reflection (θ'1 = θ1) from Fermat's principle.

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Q: The sun is 60 degrees above the horizon. Rays from the sun strike the still surface of a pond and…

A: The ray diagram for the arrangement is:

Q: A fish is looking at a 1.0m high plant at the edge of a pond. Will the plant appear to the fish…

A: For  a fish which is looking at the 1.0m high  plant at the edge of a pond will look taller than its…

Q: Rainbow is produced when the sunlight is ____________ by the clouds/droplets. a. reflected →…

A: Given: Rainbow is produced when the sunlight is ____________ by the clouds/droplets.

Q: Huygens' principle states that each point of the medium becomes an individual source of circular…

A: The secondary waves are formed from the points on the wavefront. The points on same wavefront have…

Q: The level of water in a clear, colorless glass can easily beobserved with the naked eye. The level…

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Q: A ray of light travels through air towards a thin layer of linseed oil (n = 1.50) resting on top of…

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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 colors in a rainbow are caused by(a) the interaction of the light reflected from…

A: A rainbow is the phenomenon which is caused by reflection, the refraction and the dispersion of…

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: Why is an object in water always appear to be at a depth shallower than it actually is?

A: When light ray falls on surface of varying medium, it produces phenomenon such as reflection and…

Q: A woman on shore standing close to the sea water's edge looks toward the direction of the sea. If…

A: Refer attachment

Q: When you stand with your back to the Sun, you see a rainbow as a circular arc. Could you move off to…

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Q: Fermat’s principle is of least time rather than of least distance. Would least distance apply as…

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Q: pool? 45.0 cm 1.90 m

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Q: Please state Huygens Principle in your own words

A: Required : Statement of Huygens principle.

Q: Give practical applications of total internal reflection?

A: To explain: Practical applications of total internal reflection.

Q: A coin is placed at the bottom of a tank which is filled by two liquid layers as shown. The apparent…

A: Real depths when refractive index is 3/2,  d1=4.5 cm   Real depths when refractive index is 4/3,…

Q: 6. Why is red colour always seen on top while blue is at the bottom of a rainbow? A. Red has a long…

A: Red colour  has maximum Wavelength   and speed compared to other colours . therefore ,  deviation of…

Q: When a fish looks up at an angle of 45 degrees with the horizon, does it see the sky or the…

A: The incident light from the sky travels through the air and when it enters the water medium it gets…

Q: When a fish in a pond looks upward at an angle of 45°, does it see the sky above the water’s surface…

A: A fish in the pond looks upwards at an angle of 45o.

Q: why light cannot easily escape a diamond ?

A: Question: Why light cannot easily escape diamond?   Answer: Suppose a diamond is in the air.  A ray…

Q: The diagram at the right shows a ray of light traveling through air towards a thin layer of linseed…

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Q: With the help of Huygens’ construction, explain the phenomenon of diffraction

A: According to Huygen's wave theory, every point of wave front maybe regarded as source of light. When…

Q: ft tall person walks away from a 10 ft lamp post at a constant rate of 3 ft/sec. What is the rate…

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Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as: