1.

If an object of height 5 em is placed perpendicular to the principal Axis at adistance of 15 cm from a convex lens of focal length 10 centimetre then theImage distance is​

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Answer:

20 MEN do a quarter port of a job in eight days. if the WORLD needs to be COMPLETED in the NEXT four days how MANY men are needed to achieve the target?



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