A pulse of red light and a pulse of blue light enter a glass block at the same time normal to its surface. Strictly speaking, after passing through the block, which pulse exits first?

Q: At what angle is light inside crown glass completelypolarized when reflected from water, as in a…

A:

Q: A red light and blue light enter a rectangular glassblock normal to its surface at the same time.…

A: According to the question, red light and blue light enters a rectangular glass block normal to its…

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

A: Given:  Light bends in the optical fibre

Q: The speed of light in a dense glass is measured at 1.70*10^8 m/s. How do you determine the…

A: The expression for the required refractive index is,

Q: The absolute refractive index of air is A) 1.03 B) 1.00003 C) 1.003 D) 1.0003

A: Refractive Index  is a value calculated from the ratio of the speed of light in a vacuum to that in…

Q: A ray of light travelling in air enters obliquely into water. Does the light ray bends towards the…

A: The light ray bends towards the normal.

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 laws of refraction and reflection are the same for sound as for light. The speed of sound in air…

A: Use Snell's law sinθisinθr=vairvw

Q: A ray of white light, incident upon a glass prism, is dispersed into its various color components.…

A: Given information :- It is given that white light passes through a glass prism and gets dispersed…

Q: When ordinary light is inclined at an oblique angle upon water, what can you say about the reflected…

A: Unpolarized light contains polarization in all the directions, which means the unpolarised light has…

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: what is the index of refraction of a material for which the speed of light within it is 2.48 x 108…

A: It is given that, c=3×108 m/sv=2.48×108 m/s

Q: The speed of light in a particular type of glass is 1.49  108 m/s. What is the index of refraction…

A: Given information: The speed of the light in the glass (v) = 1.49 ×108 m/s The actual speed of light…

Q: Light from a point source X contains only blue and red components. After passing through a…

A: In order to obtain fringes ,  When light, from any source, Should pass from two or more than two…

Q: At what angle will light traveling in the air be completely polarized horizontally when reflected…

A:

Q: At what angle will light traveling in the air be completely polarized horizontally when reflected…

A:

Q: Why light is said to have a dual nature? a. It exhibits the properties of wave and particles. b.…

A: Wave-particle duality:  According to this theory every particle and wave exhibits the dual nature,…

Q: The speed of light in a particular type of glass is 1.30 * 108 m/s. What is the index of refraction…

A: Given data The light speed in a particular glass is: v = 1.30 x 108 m/s   The expression for the…

Q: A beam of light travels into crown glass from air. If the refractive index is 1.52, calculate the…

A:

Q: The critical angle of water-air boundary is 49°. Which ray of light shown below will undergo total…

A:

Q: Determine the wavelength of red light (wavelength in air is 700 nm and the frequency is 4.29(10) 14…

A: Given,The wavelength of red light in air, λair =700 nmThe frequency of red light, f = 4.29×1014…

Q: When light from air hits a smooth piece of glass (n = 1.5) with the ray perpendicular to the glass…

A: When light from air hits a smooth piece of glass at any angle (even other than perpendicular)A…

Q: How could a converging lens be made for sound waves?

A: These types of lens should be made from a non-solid material like gas, allowing things to be…

Q: What color of light will be transmitted through overlapping cyan anf magenta filters?

A: The complementary colour of magenta is green.

Q: What is the speed of light in water?

A: Given: What is the speed of light in water Now,

Q: When white light is sent through the combination of a yellow filter and a blue filter, what color…

A: complement colour of yellow is blue. A filter absorbs the complementary colour.

Q: The shining of a diamond is due to of light: O a. refraction O b. total internal reflection O c.…

A:

Q: Polarized light a) has all its crests and troughs aligned. b) cannot be reflected. c) vibrates only…

A: Dear student Polerized light is the one in which the vibrations occurs in a single plane only.

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: When ordinary light is incident at an oblique angle upon water, what can you say about the light?

A: When ordinary light is incident at an oblique angle upon water, the reflected light will be…

Q: The speed of the light is maximum in A) Air B) Vacuum C) Water D) Glass

A: The correct option is (B). The speed of light is maximum in vacuum.

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 ray of light travelling in air enters obliquely into water. Does the light ray bend towards the…

A: When light ray travels from one medium to another where its speed is different, it bends. When the…

Q: Diamond has a high index of refraction at about 2.4, which helps account for its sparkle. How fast…

A: Given Information are  Refractive index of diamond =2.4 Velocity of light in vacuum =3*10^8 m/s

Q: What is the speed of light in air? In crown glass?

A: Speed of light in air is C.  And  C= 2.99×10^8 meter/sec.

Q: When a light ray passes from air into glass, the wavelength of the light     a) increases. b)…

A: Introduction: When lights passes from a rare medium to a denser medium its velocity is decreased.

Q: When white light disperses as it passes through a prism, which of the following colors moves at  the…

A:

Q: In which of these cases ripe bananas appear black- when illuminated with red, yellow, green or blue…

A: The color of the ripe banana must be yellow. Now the question arises what color should be mixed with…

Q: When unpolarised light beam is incident from air onto glass (n = 1.5) at the polarising angle.…

A:

Q: A light ray passes from air through a glass plate with a refractive index of 1.60 into water. The…

A:

Q: When light falls on a smooth polished surface, most of it O is reflected in different directions is…

A:

Q: When unpolarised light beam is incident from air onto glass (n = 1.5) at the polarising angle.…

A: Required : When unpolarized light is incident on the air glass interface ..

Q: A ray of light, P moving in air strikes a glass slab as shown below.

A: As per Snell’s law, Here, n1, n2, θi, and θr represent the air’s refractive index, water’s…

Q: Diamond has a high index of refraction at about 2.4, which helps account for its sparkle. How fast…

A: Let velocity in diamond = Vd Refractive index of diamond ,nd = 2.4 Refractive index of vacuum, nv =…

Q: Red, green and blue light are incident on a thin film. The light that reflects from the surface…

A: When light waves are incident on a thin film then it gets reflected by its upper interface and lower…

Q: The law of reflection applies only to surfaces that are smooth on the scale of the wavelength of…

A: Ans is True

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: