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"दो समरूप त्रिभुजों के क्षेत्रफलों का अनुपात इनकी संगत भुजाओं के अनुपात के वर्ग के बराबर होता है"। दियाः- दो त्रिभुज क्रमशः ...
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Slope of a Line A line in a coordinate plane forms two angles with the x-axis, which are supplementary. The angle (say) θ made by the li...
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Electric Generator Uses and Working Principle Based on the phenomenon of electromagnetic induction, the experiments studied above generate i...
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Theorem 6.6 Statement "The ratio of the areas of two similar triangles is equal to the square of the ratio of their correspondin...
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Speed The rate of change of distance per unit time of a moving body is called speed. Speed = distance/time The SI unit of speed is metre...
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Conservation of Linear Momentum Momentum The product of mass and velocity of a moving body is said to be momentum. It...
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Chalcolithic Period • The end of the Neolithic period saw the use of metals of which copper was the fi rst. A culture based on the use of ...
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Chapter 9 Class X Exercise 9.1 Q.No. 1 A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the...
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Consider about a circular path of radius r. A body moves from A to B with uniform speed v in time t. The body subtends an angle 𝜃 at the c...
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Class X Probability Exercise 15.1 Q.No. 1. Complete the following statements: (i) Probability of an event E + Probability of the ev...
