$reflection refraction and diffraction activity$

(d) an erect and diminished image of the object?Ħ. (c) an inverted and diminished image of the object? (b) an erect and magnified image of the object? (a) an inverted and magnified image of the object? So, black paper can burn faster than white paper. (c) What is the relative advantage of using a black paper rather than a white paper?Īnswer: Black colour absorbs most of the energy falling on it, while white colour reflects most of the energy falling on it. (b) What name is given to the distance between the spherical lens and the black paper? (a) Name the lens used in the above activity. When a spherical lens is held towards the Sun and a sharp image is formed on a piece of black paper, a hole gets burnt in the black paper, after some time. (b) State the condition under which no ‘change in the direction of propagation’ of a light ray would take place when it passes from Medium A to Medium B.Īnswer: When the incident ray makes a right angle at the point of incidence.Ĥ.

$reflection refraction and diffraction activity$

(a) Which of the two media has a higher optical density?

$reflection refraction and diffraction activity$

Light propagates faster through a Medium A than through another Medium B. Answer the following questions in brief.ġ. For this she should use-Īnswer: a concave lens, kept at a distance less than its focal length from the book.ĭ. Tanya’s grandmother needs a lens to read small letters in her book. When an object approaches a convex lens, from infinity towards its focus, the image, formed by it-Īnswer: keeps on shifting away from the lens.ħ. An incident ray, passing through the optical centre of a concave lens, after refraction through it, will-Ħ. Which of the following figures correctly represents the passage of white light through a glass prism?ĥ. The angle, between the incident ray and the emergent ray, for a rectangular glass slab is-Ĥ. Which of the following diagrams correctly shows the ‘bending of a light ray’ as it goes from an optically denser medium into an optically rarer medium?ģ. Which of the following conditions is not necessary for a change in the direction of propagation when a light ray goes from one medium to another?Īnswer: The incident light rays must always have only the blue colour.Ģ. When white light is ‘dispersed’ by a glass prism, the yellow colour in it, bends more than the blue colour.Īnswer: (1) True (2) False (3) False (4) True (5) Falseġ. A coin, kept at the bottom of an empty dry cup, appears to rise up’ when some water is poured into the cup.ĥ. An (obliquely) incident ray always bends away from the normal when it passes from one transparent medium into another.Ĥ. In an optically denser medium, the speed of light is more than the speed of light in vacuum.ģ. The basic cause of refraction is the change in the speed of light as it goes from one medium to another.Ģ. Write True or False for the following statements.ġ. An object should be placed at the _ point so that a convex lens forms its real and inverted image of the same size.Īnswer: (1) 0 (2) less (3) dispersion of light (4) focus (5) 2Fī. Here DAV Class 8 Science Chapter 10 Question Answer is provided with great explanation.ĥ. DAV Solutions for Class 8 Science Chapter 10 Refraction and Dispersion of LightĭAV Class 8 Science DAV Class 8 Science Chapter 10 Refraction and Dispersion of Light Solutions is given below. Here, the detailed DAV Solutions for Class 8 to the questions in Chapter 10 of DAV Class 8 Science book are given. To help the students clear all their doubts instantly, the DAV Class 8 Science Chapter 10 Refraction and Dispersion of Light Solutions come as a great resource.

$reflection refraction and diffraction activity$

While solving the DAV textbook questions, students often face several doubts and eventually get confused.

$reflection refraction and diffraction activity$

These DAV Solutions present you with answers to the question on the meaning of refraction of light, cause of refraction of light, rules of refraction, dispersion of white light by a glass prism, lenses, three special rays for lenses and applications of lenses. The DAV Solutions for Class 8 Science of Chapter 10 Refraction and Dispersion of Light are provided here to help the students to clear all their doubts and to help them in understanding the chapter in an easy and interesting way. The DAV Class 8 Science Chapter 10 Refraction and Dispersion of Light Solutions of The Living World Science Book is extremely crucial for the students studying in DAV Class 8.

$reflection refraction and diffraction activity$

Reflection refraction and diffraction activity