A student sitting at the back bench in a class has difficulty in reading .What could be his defect of vision? Draw ray diagram to illustrate the image formation of the blackboard when he is seated at the back and front seat State two possible causes of this defect explain the method of correction this defect with the help of ray diagram
The wheels of a car are of daimeter 80CM EACH HOw many complete revolution does each wheel make in 10 minutes when the car is travelling at a speed of 66kmperhr
Three equal cubes are placed adjacently in a row. Find the ratio of total surface area of the new cuboid to that of the sum of the surface areas of the three cube.
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