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Please post a brief soln to the problem 1) The no. of right triangles with integer sides and inradius r=2013 2)Let a,b,c,d be non zero digits. If n is the no. of 4 digit no.s abcd such that ab+cd is even, then last digit of n ...
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\hspace{-16}$In how many ways can the selection of $\bf{8}$ letters be done frm $\bf{24}$ letters\\\\ of which $\bf{8}$ are $\bf{'a'}$ and $\bf{8}$ are $\bf{'b'}$ and rest are unlike. ...
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Convert ethanal to cyclohexylcarbaldehyde ...
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Explain..why does O3 and NO2 show permanent dipole moment?? ...
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*Image* If R1 = 3 ohm R2 = 2 ohm R3 = 7.5 ohm R4 = 5 ohm R5 = 5 ohm R6 = 10 ohm R7 = 20 ohm Find the equivalent resistance between A and B. ...
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A small bar starts sliding down an inclined plane forming an an angle α with the horizontal.The friction coefficient depends on the distance x covered as μ=Kx where K is a constant.Find the distance covered by the bar till ...
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*Image* The diagram shows the graph of the derivative of a function y=f(x) for 0<=x<=5 with f(0)=0. ∫f(x)dx= [limits from 0 to 1] a.-21/20 b.21/20 c.-1 d.none of these Sir u said option b or d must be correct out of d ...
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*Image* The diagram shows the graph of the derivative of a function y=f(x) for 0<=x<=5 with f(0)=0. ∫f(x)dx= [limits from 0 to 1] a.-21/20 b.21/20 c.-1 d.none of these Sir u said option b or d must be correct out of d ...
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*Image* The diagram shows the graph of the derivative of a function y=f(x) for 0<=x<=5 with f(0)=0. ∫f(x)dx= [limits from 0 to 1] a.-21/20 b.21/20 c.-1 d.none of these Sir u said option b or d must be correct out of d ...
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Among H2S,SO2,H2O which one has least bond angle and why? ...
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1.A square is made by joining four rods each of mass M and length L.Its moment of inertia about an axis,in its plane and passing through one of its corner is (a)6ML2 (b) 4ML2/3 (c) 8ML2/3 (d) 10ML2/3 2.A thin rod of length 4l ...
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Masses of the pulley and thread are negligible C is the angle of inclination. What is the accn of Wedge? *Image* ...
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The circle x2+y2+2kx=0,k belongs to R,touches the parabola y2=4x externally.Then (a)k>0 (b)k<0 (c)k>1 (d)none of these Ans is (a). i have put y2=4x in the eq.of the circle.and in the quad.of x,i put b2=4ac.i got k=-2 ...
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A body floats in complete immersed condition in water as shown as in figure.As the whole system is allowed to slide down freely along the inclined surface,the magnitude of buoyant force *Image* (a)remains unchanged (b)increas ...
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A man throws a ball horizontally with a velocity vo from a distance of 4m vertically above the lowest point of the incline.He throws it towards the incline.The ball hits the inclined plane perpendicularly.Find vo?(g=10m/s2) ...
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please remove this new look.... i think this has resulted in loss of users from targetIIT.... some demerits i feel are... 1. we can't see recent posts... 2. neither an option for latex 3. looks so bad.. 4. a bit complex to us ...
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1)The larger of two angles made with x-axis of a straight line drawn through(1,2) so that it intersects x+y=4 at a distance 6 /3 from (1,2) is: (a)15° (b)60° (c)75° (d)105° (ans-(c)) 2)If the straight lines ax+by+c=0 and ...
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Two particles are projected from the ground,one vertically upwards and one 60 deg above the horizontal.What will be the separation between them after t seconds? ...
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A truck travelling due north at 50km/hr turns west and travels at the same speed.What is the change in velocity? (A)50km/hr north-west (B)50 2 km/hr north-east (C)50 2 km/hr south-west (D)50 2 km/hr south-east (I had a confus ...
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(a)A zinc rod weighing 25.00 g was kept in 100 mL of 1 M CuSO4 solution.After a certain time molarity of Cu2+ in solution was 0.8 M.What was the molarity of the sulphate ion(SO42-)?What was the weight of the zinc rod after cl ...
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Let F,FN and f denote the magnitudes of the contact force,normal force and the friction exerted by one surface on the other kept in contact.If none of these is zero, (a)F>FN (b)F>f (c)FN>f (d)FN-f<F<FN+f ...
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The x and y co-ordinate of the moving body are x=3t2and y=5t2 (A)velocity of the body is making angle tan-1 5/3 with +ve x-axis (B)the angle between velocity and acceleration is 0o (C)the path followed by the body is a straig ...
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The acceleration of a particle is given by a(t)=(3.00m/s2)-(2.00m/s3)t. (a)Find the initial speed vosuch that the particle will have the same x-coordinate at t=5.00s as it had at t=0. (b)What will be the velocity at t=5.00s? ...
