Questions asked by Akshay W.

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• The number of seven digit integer is to be formed using only 1, 2 &3 such that the sum of all the digits is 10 . so how many such seven digit number is possible ?
  
• Show that units of #1/sqrt(epsilon_o*mu_o)#= #ms^(-1)# ?
  
• A body starts from rest and is uniformly accelerated for 30 sec.The distance covered in first 10 sec is #x_1# , for next 10 sec is #x_2# and for last 10 sec is #x_3# the then the ratio of #X_1:X_2:X_3#=?
  
• Three metallic plates each of area A are kept as shown in figure and charges #q_1,q_2,q_3# are given to them find the resulting charge distribution on the six surfaces , neglecting edge effect ?
  
• If a magnet is suspended at an angle of #30^o# to the earth magnetic meridian , the dip needle makes angle of #45^o# with the horizontal . the real dip is ?
  
• Balance this reaction using ion electron method in shortest way possible . but must be clear .. #Fe^(2+)+MnO_4^(-)+H^(+) -> Fe^(3+)+Mn^(2+)+H_2O# ?
  
• The potential energy of gravitational interaction of a point mass m and a thin uniform rod of mass M and length L ,if they are located along the straight line at a distance 'a' from each other?
  
• Three particles of mass 1,2,3 Kg are placed at the corners A , B , C respectively of an equilateral triangle ABC of edge 1 m .Find distance of there center of masses from A ?
  
• In the arrangement shown in the figure #M_a\ "and"\ M_b# are #2\ "Kg and"\ 1\ "Kg" #respectively .Find the acceleration of center of massof both the blocks Neglect friction everywhere . ?
  
• Two blocks A and B of equal masses are attached to a string passes over a smooth pulley fixed to a wedge as shown find the magnitude of acceleration of the center of mass of the two blocks when they are released from rest . neglect friction ?
  
• 25 ml of a solution of barium hydroxide on titration with 0.1 molar solution of hydrochlroric acid gave a titre value of 35 ml . The molarity of sodium hydroxide is ?
  
• How to integrate ? #int_0^oo 1/(1+e^x)*dx#
  
• If #vec a# and #vec b# are two equal vectors inclined at the angle #theta# then value of #sin (theta/2)=?#
  
• The diagram shows three circuits with identical batteries, identical inductor and identical resistors . Rank them according to the current through the battery ?
  
• The gas is enclosed in a metal container with movable piston on top . heat is added to the system from bottom by placing a candle at the bottom which of the following is true ?
  
• As a 6 kg of a liquid substance at its freezing point completely freezes , it gives enough heat to melt 3 kg of ice at #0^o# C the heat of fusion of the substance is ?
  
• A wave of frequency 500 Hz has wave velocity of 350 m/s. 1)Find the distance between the two points which has #60^o# out of phase. 2)Find the phase difference between two displacements at certain point of time #10^-3#s apart?
  
• The value of #sum_(r=0)^50i^((2r+1)!)# where i is #sqrt(-1)# ?
  
• A piece of metal floats on mercury .the coefficient of expansion of metal and mercury are #gamma_1# and #gamma_2# ,respectively .if the temperature of both metal and mercury increased by an amount #Delta T# . See description ?
  
• Three liquids a,b,c having specific heat 1, 0.5 , 0.25 respectively are at temperature 20 ,40 ,60 respectively find temperature equilibrium if all have the same mass?
  
• The range of X in the following expression is . #abs(abs(x+1)+1)>=1# ?
  
• Six married couples are sitting in a room .number of ways in which 4 people are selected so that there is exactly one married couple among the four is ?