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Dot and Cross Product of Vector
Scalar product or dot product: The scalar product of two vectors and is defined as the product of the magnitudes of and and the cosine
Vector Subtraction, Resolution and 3D Representation
Subtraction of vectors: Let us consider and creates angle θ. To subtract from we can write + (- ) [where – is the opposite vector
Vector: Basic definition and addition
Scalar: The quantities which are specified by magnitude and no directions and follow the ordinary algebra are called scalar quantity. Example: mass, volume, speed, density
Numerical Problems on Mirror
An object is kept in front of a concave mirror of focal length 20 cm. The image formed is 3 times the size of object.
Image Formation by Curved Mirror
Image formation by a concave mirror: 1. When position of object is at infinity, position of image is at principle focus (F). Image is real
Basic Definition of Curve Mirror
Reflection through spherical surface: Centre of curvature: The centre of a hollow sphere of which the curved spherical mirror forms a part is called centre
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