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#2
February 20th, 2015, 09:18 AM
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| Re: Previous year question papers of B.Sc Maths
Hello dude as you want previous year question paper B.sc math's 1st year…. So here I am providing you BSc. Maths question papers of BHU…… 1000 small droplets of water, each of radius r and having charge q rm a large spherical drop. The electrical potential of large drop at its surface is higher than the potential of the surface of small drops by: (1) 1000 times (2) 100 times (3) 10 times (4) 2 times A capacitor of 20 LF and charged to 500 Volt is connected in parallel with another capacitor of 10 ~lF charged to 200 Volt. Find lhe common potential: (1) 200 Volt (2) 300 Volt (3) 400 Volt (4) 500 Volt An electric bulb rated for 500 Watts at 100 Volt is used in a circuit having 200 Volt supply. The resistance R is put in series with the bulb so that the bulb delivers 500 Watt energy. Find the value of the resistance R : (I) 50 ohm (2) 40 ohm (3) 30 ohm (4) 20 ohm The impurity atoms with which pure Silicon should be doped to make a P type semiconductor is : (1) Phosphorus (2) Aluminium (3) Sodium (4) Antimony Which of the following statements about the nuclear reactor is true: (1) moderator is used to control the number of neutrons. (2) moderator is used to slow down the neutrons. (3) controller rods are used to slow down the neutrons. (4) coolant is used to control the number of neutrons. The radioactive decay rate of a radioactive element is found to be 103 disintegration per second at a certain time. If the half life of the element is 1 second then the decay rate after 3 second is : (1) 125 disintegration/ sec (3) 500 disintegration/sec (2) 250 disintegration! sec (4) 750 disintegration/sec If the potential difference applied to an X- ray tube is increased then in the emitted X- rays: (1) The intensity increases (2) The intensity decreases (3) the minimum wavelength increases (4) the minimum wavelenght decreases     For more detailed paper here I am attaching pdf file please download it… |