Question
Which British scientist is known for developing the
principle of holography in 1947 to improve the resolution of the electron microscope?Solution
The correct answer is C
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The combined cost price of two products, P and Q, is Rs. 5000. Product P is marked up by 25% on its cost and Product Q is marked up by 40%. After giving...
A shopkeeper buys an article for 1200. He marks it 30% above cost price and gives 10% discount on marked price. What is his profit (in rupees)?
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