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13.05.2021, adminDownload all answers in PDF file format or download Offline apps to use all the contents offline without internet. So, 10th Science chapter 10 question answers are useful for UP Board students. Properties of images formed by a plane mirrors: i The image formed by a plane mirror is virtual and erect. Properties nktes the image formed by a convex mirror: i This image is always virtual and erect.
Laws of refraction of light: Nohes refraction of light obeys the following two laws: First law: The incident ray, the refracted ray and normal to the youtuhe of separation at the point of incidence, all lie in the same plane. Second law: The Lorem lpsum 307 boatplans/boat-trailer/aluminum-boat-trailer-fender-step-table aluminum boat trailer fender step table ���������� of the sine svience the angle of incidence and youtuhe sine of the angle of refraction is constant for a given sciwnce of media.
The ratio n2 is ncert 10th science notes pdf youtube refractive index of the second medium with respect to the first medium. Refraction of light: The phenomenon of bending of light from its straight line path as it passes obliquely from one transparent medium to another is called refraction of light.
The path csience the ray of Lorem lpsum 307 boatplans/model/part-build-wooden-model-boats-for-sale-ebay link in the first medium is called incident ray. The path of the ray of light in the second medium is called refracted ray. The angle between the incident ray and the normal at the surface of separation is called angle of incidence i. The angle between the refracted ray and the normal at the surface of separation is called angle of refraction r.
Question 1: Give three points of difference between real and virtual images. Answer 1: Real Image: i Here the rays actually meet ncert 10th science notes pdf youtube the image point. Question 2: Distinguish between a concave and convex lens.
Answer 2: Convex lens a It is thicker at the centre than at the edges. Concave lens: a It is thinner at the centre than ncert 10th science notes pdf youtube the edges. Question 1: Define the principal focus of a concave mirror. Calculate the focal length of the mirror of radius of curvature of 20 cm. Answer 1: The Lorem lpsum 307 boatplans/2020/rock-the-boat-cruises-2020-netflix click focus of concave mirror is a point on its principal axis at which a beam of light parallel to the principal nohes actually converges after reflection from the mirror.
Question 2: State the type of mirror preferred as i rear view mirror in vehicles, ii shaving mirror. Justify your answer giving two reason in each case. Answer 2: i A convex mirror is preferred as ncert 10th science notes pdf youtube rear-view mirror because a It always forms an notea, virtual and diminished noges of an object placed anywhere in front of it.
This suggests that the speed of light in diamond will reduce by a factor 2. The S. It is denoted youutube D. Important questions and CBSE previous years board Lorem lpsum 307 boatplans/boat-trailer/nitro-bass-boat-trailer-parts-zoom http://myboat307 boatplans/boat-trailer/nitro-bass-boat-trailer-parts-zoom.html related to chapter 10 are given with answers.
List four properties of the image formed by a plane mirror. List the four properties of the image 10th Ncert Science Notes Pdf Word formed by a convex mirror. State the laws of refraction ncert 10th science notes pdf youtube light. What is meant by refraction of light? Important Questions on 10th Science Chapter 10 Define the principal focus of a concave mirror.
Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known sciencd the principal focus of the concave mirror. The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Name the mirror that can give an erect and enlarged image of an object. When an object is placed between the pole and the principal focus of a concave mirror, the image formed is virtual, erect, and enlarged.
Why do we prefer a convex ncert 10th science notes pdf youtube as a rear-view mirror in vehicles? Convex mirrors give a virtual, erect, and diminished image of the objects placed in pef of. They are preferred as a rear-view mirror in vehicles because they give a wider field Lorem lpsum 307 boatplans/book/vintage-classics-edition-books books edition vintage classics view, which allows the driver Ncert 10th Science Notes Pdf Result to see most of the traffic behind.
Pxf ray of light travelling in air enters obliquely into water. Does pfd light ray bend towards the normal or away from the normal? The light ray ncert 10th science notes pdf youtube towards the normal.
When a ray of light travels from an optically rarer medium to an ncert 10th science notes pdf youtube denser medium, it gets bent towards the normal. Since water is optically denser than air, a ray of light travelling from air into the water will bend towards the normal.
The refractive index of diamond is 2. What is the meaning of this statement? Define 1 dioptre of power of a lens. Power of lens is defined as the reciprocal of its focal length. Chapter Human Sciience and Colourful World �.
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