3/17/2024 0 Comments Angles of reflection worksheet![]() ![]() The nerve cells' sensations are subsequently transferred to the brain via the optic nerve.Ģ6. Regular reflection creates images.Īns: The lens directs light to the retina, which includes a number of nerve cells. Describe regular reflection with the help of a diagram.Īns: Regular reflection is a reflection from a smooth surface such as a mirror. Give any four examples of luminous objects.Īns: The Sun, fire, the flame of a candle, and an electric lamp are examples of luminous objects.Ģ4. The incident rays reflected rays, and normal rays are drawn at the point of incidence to the reflecting surface all lie in the same plane, according to the second law of reflection.Ģ3. Vitamin A is found in foods including eggs, milk, curd, cheese, butter, and fruits like papaya and mango.Īns: ‘The angle of incidence is always equal to the angle of reflection,' says the first law of reflection. List the food items which contain vitamin A.Īns: Vitamin A is abundant in raw carrots, broccoli, and green vegetables (such as spinach) as well as cod liver oil. The angle of incidence equals the angle of reflection, according to the law of reflection.Ģ1. Incident ray is defined as a light ray, which strikes any surface.Īns: The ray that returns from the surface after it has been reflected is known as the reflected ray. It persists there for about _of a second.Īns: Dispersion of light is referred to as splitting of light into its constituent colors.Īns: Rainbow is a natural phenomenon that shows dispersion.Īns: a. The impression of an image does not vanish immediately from the retina. Braille is a written language for the blind in which characters are represented by patterns of raised dots that can be felt with their fingertips.ġ8. _ system helps visually challenged persons to read and write.Īns: Braille. For simplicity, the term ray is used for a narrow beam of light.Īns: Submarines, tanks, and soldiers in bunkers use periscopes to see things outside.ġ7. In reality, there is a narrow beam of light that is made up of several rays. Do you think a ray of light is an idealization? Why?Īns: Yes a ray of light is an idealization. A set of raised bumps or dots can be sensed with a finger in the Braille system.ġ5. Blind individuals read and write using the Braille system. Who developed a system for visually challenged persons and published it in 1821? Ans: Braille was developed in the 1820s by Louis Braille and is the most widely used resource for visually impaired people. Some persons may lose their eyesight because of a _ or an _. Xerophthalmia can progress to night blindness or more serious damage to the cornea, the outer layer of the eye.ġ3. Xerophthalmia is a progressive eye disease caused by a lack of vitamin A. ![]() Lack of which nutrient is responsible for eye troubles?Īns: Deficiency of Vitamin A causes eye troubles. Cones are concentrated in the macula, which is located in the center of our retina and helps us see small details.ġ2. They are responsible for our color perception. In the retina, cones are a type of photoreceptor cell. _ are sensitive to bright light in eye.Īns: Cones. This is referred to as the blind spot.ġ1. Through your optic nerve, your retina conveys this information to your brain, allowing you to see.Īns: There are no sensory cells at the intersection of the optic nerve and the retina, hence vision is impossible there. Thousands of light-sensitive cells (rods and cones) and other nerve cells make up the retina, which receives and organizes visual data. The lens focuses light on the back of the eye, on a layer called_.Īns: Retina. ![]() The iris is a colored ring that surrounds our pupils and gives our eyes their distinct color.ĩ. Name the part of the eye which gives distinctive color.Īns: Iris is the part of the eye that gives distinctive color. The reversal of a mirror image, where the right side of the object appears on the left side behind the mirror, is known as lateral inversion.Ĩ. Image formed in a plane mirror undergoes _.Īns: lateral inversion. Red, orange, yellow, green, blue, indigo and violet are the colors that make up white light.ħ. Angle of incidence is _equal to the angle of reflectionĦ. A kaleidoscope is an optical device containing two or more reflecting surfaces that are angled at an angle to each other.ĥ. Which one of the following works on the basis of multiple reflections?Ī. Cornea protects the eye's sensitive components from dirt, bacteria, and other foreign particles.Ĥ. Which part of the eye protects the interior from accidents?Īns: C. The angle between normal and incident rays is called the _.Ī. When all the parallel rays reflected from a rough or irregular surface are not parallel, the reflection is known as _.Ī. ![]()
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