Recent questions tagged q63

Two identical current carrying coaxial loops carry current I in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as C,

asked Jul 29, 2015 by meena.p

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How does the magnetic moment of each part of the bar magnet change it is cut into two equal piece transverse to its length ?

asked Jul 20, 2015 by meena.p

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Define the term electrical resistivity of a material. Write the S.I units. Derive an expression for the resistivity of a metal in terms of number density and mass of free electrons present in it .

asked Jul 1, 2015 by meena.p

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Careful measurement of the electric field at the surface of a block box indicates that the net outward flux through the surface of the box is $8.0 \times 10^3 \;N-m^2 /C$. What is the net change inside the box ?

asked Apr 27, 2015 by meena.p

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What is the net flux of the uniform electric field $ E= 3 \times 10^{3}\; N/C$ through a cube of side $20\;cm$ oriented .So that its faces are parallel to the coordinate plane?

asked Apr 27, 2015 by meena.p

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What is the net flux of the uniform electric field $ E= 3 \times 10^{3}\; N/C$ through a cube of side $20\;cm$ oriented .So that its faces are parallel to the coordinate plane?

asked Apr 27, 2015 by meena.p

1 answer

In Borax, the number of -OH group attached to boron atoms is

asked Jul 27, 2014 by thanvigandhi_1

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The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

asked Apr 7, 2014 by sreemathi.v

1 answer

Number of chiral carbons In $ \beta -D-(+)$ glucose is

asked Mar 29, 2014 by thanvigandhi_1

1 answer

The vapour pressure of pure liquid solvent A is 0.80atm.When a non volatile substance B is added to the solvent,its vapour pressure drops to 0.40atm,the mole fraction of component B in the solution is

asked Mar 25, 2014 by balaji.thirumalai

1 answer

The standard enthalpy of formation $(\Delta H_f^{\circ} )\: at\: 298\: K$ for methane, $CH_4(g),$ is -74.8 kJ/mol. The additional information required to determine the average energy for $C-H$ bond formation would be

asked Mar 18, 2014 by thanvigandhi_1

1 answer

Cassiterite is an ore of

asked Mar 18, 2014 by meena.p

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In Bakelite the rings are joined to each other through

asked Mar 12, 2014 by thanvigandhi_1

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Which of the following is the correct order of bond length?

asked Mar 6, 2014 by sreemathi.v

1 answer

Identify the end product in the following sequence

asked Mar 4, 2014 by sreemathi.v

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A light beam travelling in the x-direction is described by the electric field $E_y = 300 \: V/m \: \sin \omega\: (t – x/c)$. An electron is constrained to move along the y-direction with a speed of $2 \times 10^7 m/s$. Find the maximum magnetic force on the electron

asked Mar 1, 2014 by thanvigandhi_1

1 answer

Tautomerism is exhibited by

asked Feb 25, 2014 by meena.p

1 answer

Product of below reaction will be

asked Feb 24, 2014 by sreemathi.v

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A monoatomic ideal gas undergoes a process in which the ratio of P to V at any instant is constant and equal to unity. The molar heat capacity of gas is:

asked Feb 20, 2014 by sharmaaparna1

1 answer

The EMF of cell is : $Pt/H_2/CH_3COOH(0.1M)\parallel NH_4OH(0.01M)/H_2/Pt$.$K_a$ for $CH_3COOH=1.8\times 10^{-5}$ and $K_b$ for $NH_4OH=1.8\times 10^{-5}$

asked Feb 17, 2014 by sreemathi.v

1 answer

$50V$ battery is supplying a current of $10A$ when connected to a resistor. If the efficiency of the battery at this current is 25%, then the internal resistance is:

asked Feb 10, 2014 by thanvigandhi_1

1 answer

Solve : $ y dx +x dy +\sin y \cos ^2 (xy) dy+e^x \cos^2 (xy) dx=0$

asked Feb 6, 2014 by meena.p

1 answer

Find the centroid of the triangle formed by the feet of the three normal lies on the axis of parabola?

asked Feb 6, 2014 by sreemathi.v

1 answer

In which one of the following species does the transition metal ion have $d^3$ electronic configuration?

asked Feb 3, 2014 by sreemathi.v

1 answer

Which of the following is not true for transition metals.

asked Jan 30, 2014 by sreemathi.v

1 answer

How many NAND gates are used to form an AND gate

asked Jan 29, 2014 by meena.p

1 answer

Oxygen evolves on heating

asked Jan 28, 2014 by sreemathi.v

1 answer

Median of 16, 10, 14, 11, 9, 8, 12, 6, 5 is

asked Jan 25, 2014 by thanvigandhi_1

1 answer

Which of the following statement is incorrect

asked Jan 24, 2014 by sreemathi.v

1 answer

Which of the following is carcinogenic

asked Jan 21, 2014 by sreemathi.v

1 answer

Which of the following statement is correct in relation to the hydrogen atom?

asked Jan 13, 2014 by sreemathi.v

1 answer

If the lines $x=1+s,\:y=-3-\lambda s,\:z=1+\lambda s$ and $x=t/2,\:y=1+t,\:z=2-t$ with parameters $s\:and\:t$ respectively, are coplanar, then $\lambda=?$

asked Jan 4, 2014 by rvidyagovindarajan_1

1 answer

For what value of n is $\frac{a^{n+1}+b^{n+1}}{a^n+b^n}$ the GM of 4 and 16.

asked Jan 3, 2014 by yamini.v

1 answer

$f(x)=\large\frac{\log(1+ax)-\log(1-bx)}{x}$ is not defined at $x=0$ .The value which should be assigned to f at $x=0$.So that it is continuous at $x=0$ is

asked Dec 24, 2013 by sreemathi.v

1 answer

$\int \limits_1^6 (6-4x) dx \leq 6-5b \;\&\;6 > 1$ Find 'b' value

asked Dec 17, 2013 by meena.p

1 answer

$Kp_1\: and \: Kp_2$ for the reactions $ X \leftrightharpoons Y+Z.............(1) \: and \: A \leftrightharpoons 2B ............(2)$ are in the ratio of 9 : 1. If degree of dissociation of X and A be equal, then total pressure at equilibrium (1) and (2) are in the ratio :

asked Dec 16, 2013 by thanvigandhi_1

0 answers

When one gene influences the expression of another non - allelic gene it is termed as :

asked Dec 9, 2013 by thanvigandhi_1

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In an operon a repressor is produced by

asked Dec 5, 2013 by thanvigandhi_1

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If the vectors $p\hat i+\hat j+\hat k,\:\hat i+q\hat j+\hat k,\: \:and\:\:\hat i+\hat j+r\hat k$ $(p\neq q\neq r\neq 1)$ are three coplanar vectors then the value of $pqr-(p+q+r)=?$

asked Nov 29, 2013 by rvidyagovindarajan_1

1 answer

Refer to the below equation :

asked Nov 28, 2013 by sreemathi.v

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