Describe the cause of the diamond's sparkle.

Q: Give an example of total internal reflection.

A: Total internal Reflection: When light goes from a denser medium to a rarer medium, at an angle of…

Q: This crystal has a critical angle of 40 degrees. 90° 400 Calculate its index of refraction.

A: solution is given as

Q: What is law of reflection?

A: According to the law of reflection, the angle of incidence is equal to the angle of refraction when…

Q: What is a refractive mirror?

A: The process of bending of light while travelling from one medium to another is called refraction .

Q: otal internal reflection is used to A. Transmit light in optical fibers B Diffuse light C…

A: Optical fiber :             An optical fiber is a cylindrical wave guide made of transparent…

Q: Do you have an idea about how the rainbows were formed?

A: Do you have an idea about how the rainbows were formed?

Q: Does a diamond under water sparkle more or less than in air? Defend your answer.

A: Diamond shines less in air than in the water. The two major concepts are: Critical angle…

Q: Which of the following does NOT contribute to sparkling of diamonds? A) Total Internal Reflection B)…

A:

Q: A ray of light is incident normally on a plane mirror. The value of angle of reflection will be a)…

A: Incident angle is the angle that it makes with the normal drawn on the plane of incident. When the…

Q: what is an optical fibre

A:

Q: Give refractive index of the following Air, Ice, Water, Alcohol and quartz.

A: The refractive index is a number which tells the how fast light travels through a given medium or…

Q: Light is viewed as a ______________ under geometric optics.

A: When a light ray strikes the boundary between two transparent materials, the light ray will be…

Q: of light. Phenomenon of bending of light around corners of a small obstacle and spreading into…

A: Phenomenon of bending of light around corners of a small obstacle and spreading into region of…

Q: True or False: The Law of Reflection applies to diffuse reflection only.

A: Reflection off of rough surfaces  known as diffuse reflection. but the nature of the surface has…

Q: Calculate the speed of light in fused quartz. What percent is this of the speed of light in vacuum?…

A: The index of refraction of fused quartz is given as n=1.458

Q: A prism with an axis that is not at right angle to the base is ____________

A: A prism with an axis that is not at right angle to the base is called oblique prism. In case of…

Q: Why do diamonds sparkle?

A: A diamond, which has a very complex internal structure sparkles very brightly under a good light.…

Q: What is the reason why a green colored shirt looks green?

A: An object color appearance depends on the wavelengths of light which reflected by the object to an…

Q: State the law of reflection?

A: Figure.1 shows the case of a reflection.

Q: Will the angle of incidence and angle of reflection in a smooth surface change when it is reflected…

A: Let the angle of incidence in case of smooth surface = i Let the angle of reflection in case of…

Q: Does the laser beam from the laser device degrade when passing through a glass prism?

A: Laser beams are considered as monochromatic beams .

Q: How do you do surface area of a rectanuglar prism?

A: The formula used is  2B + Ph where B is the area of base of prism  P is the perimeter of a base…

Q: Give practical applications of total internal reflection?

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

Q: Light cannot easily escape a diamond. Why?

A: Concept:-  The above problem can be resolved using the concept of critical angle. Critical angle is…

Q: What is happen when difference in refractive index of core and cladding when it" difference in…

A: Here talking about the difference of refractive index of core and cladding.We have to find what…

Q: Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'? A. Rainbow…

A: Mirage is the natural phenomenon known as deer's thirst in Sanskrit. The Sanskrit word used for…

Q: Explain the phenomenon of total internal reflection.

A: To explain: The phenomenon of total internal reflection.

Q: A green pencil does which of the following

A: Answers is (B) Reflects only green light . Explanation is in next step.

Q: Discuss in detail the formation of rainbows.

A: Visible light have seven frequency bands that each corresponds to a different color. The order of…

Q: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…

A: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…

Q: The angle of incidence is always to the angle of reflection.

A: The incident rays comes with some angle and it is known as incidence angle. The reflected ray comes…

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

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

Q: Refractive index of diamond is 2.4, speed of light in air is 3 × 10% m/s. Calculate speed of light…

A: Given data:  Refractive index (n) = 2.4 Speed of light in air (c) = 3×108 m/s Required: Speed of…

Q: Distinguish between diffuse and regular (specular) reflection in terms of both cause and result.

A: Specular reflection can be defined as the reflection of light from smooth surface at a definite…

Q: For each angle of incidence, the corresponding value of angle of reflection is same different can be…

A:

Q: Cite the law of reflection.

A: There are two laws of reflection.

Q: . Crystals that are_______________ produce two planes ofpolarized light, each perpendicular to the…

A: Birefringent anisotropic crystals or birefractive crystals such as virtual tetragonal crystal are…

Q: Why does a high flying airplane cast little or no shadow on ground below while a low flying airplane…

A: An aeroplane cast little or no shadow when flying high above the ground whereas a low flying…

Q: What is total internal reflection?

A: We know that light moves from material that has a higher index of the material to a lower index of…

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: