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In a binomial distribution B(n, p=1/4), if the probability of at least one success is greater than or equal to 9/10, then prove that n is greater than 1/(log10 4 - log10 3) ...
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In Y.D.S.E set up the separation between the slits is 10l. Then the maximum number of interference maxima obtained on the screen is ...
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For real x, let f(x)=x3 +5x+1, then prove that f is one-one and onto R. ...
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In the problem, I cannot do the marked ones. Please tell me how can I find the path difference in this problem for 2nd part. *Image* ...
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4 thin rods of length L and mass M are joined together to make a square. Find the moment of inertia of the system about any side. My approach:- I am finding the MI about the left side. The MI of the top and bottom rods(each) ...
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The product obtained in the reaction C{{H}_{3}}CH=C{{H}_{2}}underset{ ext{benzoyl peroxide}}{mathop{xrightarrow{,,,,,,HCl,,,,,}}}, is ...
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The spokes of a wheel are made of metal and their lengths are of one metre. On rotating the wheel about its own axis in a uniform magnetic field of 5 × 10–5 Tesla normal to the plane of wheel, a potential difference of 3.1 ...
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What will be the minimum percentage for the students of WB board to be eligible for JEE 2013? ...
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What book can I follow for inorganic chemistry for JEE-Mains and Advanced? I have a magazine which has a gist of whole inorganic. Is this sufficient? ...
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Parallel rays fall perpendicularly on a surface of a solid sphere of glass. The radius of the sphere is 5cm and refractive index of glass is 1.5. Where will the rays meet ? ...
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∫(x2+3)/x6(1+x2)=? Please explain. ...
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What is the structure of cyclobutadienyl anion(C4H4)2- ? I dont understand where the -ve charges will be placed. ...
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Two long, parallel conductors carry currents i1=3.0 A and i2=3.0 A, both directed into the page, detemine the magnitude of the resultant magnetic field at point P. *Image* ...
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What is the value of tan-1((1/2)tan2A)+ tan-1(cotA)+ tan-1(cot3A) ? ...
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What is the number of electrons in cyclobutadienyl anion? ...
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Some converging light rays fall on a convex mirror of focal length of 30 cm. In absence of the mirror the rays could meet at distance of 20 cm from the pole of the mirror. Where do the rays meet in presence of the mirror? ...
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In the reaction overset{ ext{I},,}{mathop{C{{H}_{3}}CON{{H}_{2}}}},underset{Delta}{mathop{xrightarrow{{{P}_{2}}{{O}_{5}}}}},overset{text{I}}{mathop{C{{H}_{3}}CN}}, , the hybridisation state of the carbon atom (I) changes from ...
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A straight chain hydrocarbon has the molecular formula {C_8}{H_{10}} . The hybridisation for the carbon atoms from one end of the chain to the other are respectively s{p^3},,s{p^2},,s{p^2},,s{p^3},,s{p^2},,s{p^2},,sp and sp. ...
