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# CBSE Free Doubts and Solutions

## How to do posting and balancing

Asked by diyamundra44 21st February 2020, 3:46 PM

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## In the following question, why do we use the formula l/fo(D/fe) and not L/fo(1+D/fe)? The total magnification produced  by a compound microscope is 20.The magnification produced by the eyepiece is 5.The microscope is focussed on a certain object.The distance between the objective and eyepiece is observed to be 14cm.If the least distance of distinct vision is 20cm calculate the focal length of the objective and the eyepiece.

Asked by Hppothen 21st February 2020, 2:41 PM

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## samta ltd forfeited 800 equity shares of rs 100 each for the non payment of first can rs 39 per share. the final call of rs 20 per share was not yet made out of the forfeited shares 400 were issued at the rate of rs.105 per share fully paid

Asked by amanhanduja11 21st February 2020, 1:15 PM

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## Suppose the value of demand and supply curve of a commodity X is given by the following two equation simultaneously:             Qd=200-10p            Qs=50+15p a)       Find the equilibrium price and equilibrium quantity of commodity X b)      Suppose that the price of a factor inputs used in producing the commodity has changed ,resulting in the new supply curve given by the equation                      Qs=100+15p        Analyse the new equilibrium price and new equilibrium quantity as against the original equilibrium price and equilibrium quantity

Asked by athul32130 21st February 2020, 12:18 PM

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## Draw the equipotential surface corresponding to a uniform grid consisting of long equally spaced parallel charged wires in a plane. please explain with a diagram showing the equipotential surface

Asked by prakriti12oct 21st February 2020, 11:11 AM

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## What is the radius of a circle?

Asked by Ismailkhatri93714 21st February 2020, 10:51 AM

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## What is simple interest and compound interest

Asked by Chirayupurohit8 21st February 2020, 10:07 AM

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## Who is the greek god of the sky and the universe?

Asked by Trisha Gupta 21st February 2020, 9:27 AM