Find the power of a convex lens if the image formed is at a distance of 10 cm from the lens when the object is placed on the other side of the lens at 40 cm from the optical centre?
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A sentence has been given in Direct/Indirect Speech. Out of the four given alternatives, select the one which best expresses the same sentence in Indirect/Direct Speech.
In the early 7th century, 610 A.D Islam was founded and Prophet Muhammad was accredited for its origin. It is beleived that it was first origined in Mecca and Medina.
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