April 5, 2025
Exercise 9.1 Q1. Recall that two circles are congruent if they have the same radii. Prove that equal chords of congruent circles subtend equal angles at […]
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April 5, 2025
Q1. A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side ‘a’. Find the area of the signal board, using Heron’s formula. If […]
April 5, 2025
Table of contents Exercise 11.1 Q1. Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved […]
April 5, 2025
Q1. A survey conducted by an organisation for the cause of illness and death among the women between the ages 15–44 (in years) worldwide, found the […]
April 5, 2025
Table of contents Page No. 27 Q1. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 […]
April 5, 2025
Table of contents Page No. 74 Q1. An object has moved through a distance. Can it have zero displacements? If yes, support your answer with an […]
April 5, 2025
Table of contents Page No. 91 Q1. Which of the following has more inertia?(a) A rubber ball and a stone of the same size?(b) A bicycle and […]
April 5, 2025
Table of contents Page No. 102 Q1. State the universal law of gravitation.Ans: According to Newton’s universal law of gravitation, everybody in this universe attracts every other body with […]
April 5, 2025
Table of contents Page No. 115 Q1. A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of […]