Which of the following is a characteristic of an exothermic reaction?
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What is the value of acceleration due to gravity at the centre of earth?
Which of the following physical quantity measures the rate of work done?
A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is
Name the type of mirror used in the headlight of vehicles
A curved mirror where the reflecting surface is curved inwards is called a
Which type of electromagnetic radiation has the longest wavelength?
What is the value of acceleration due to gravity on the surface of the earth?
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