Recent questions tagged q116

The rms velocity can be calculated by

asked Mar 2, 2014 by sharmaaparna1

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The cannizzaro reaction of benzaldehyde and formaldehyde in the presence of $NaOH$ gives, $(i)\;C_6H_5CH_2OH\; ;(ii)\; C_6H_5COONa\; ; (iii)\; HCOONa \; ; (iv) \;CH_3OH$

asked Feb 28, 2014 by meena.p

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Phenol on exposure to air produces

asked Feb 27, 2014 by sreemathi.v

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Find the equation of normal to the hyperbola $\large\frac{x^2}{a^2}-\frac{y^2}{b^2}$$=1$ at $(x_1,y_1)$ ?

asked Feb 10, 2014 by sreemathi.v

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If $\;x=\sqrt{2+\sqrt{2+\sqrt{2+------\;\infty}}}\;and\;y=\sqrt{2\;\sqrt{2\;\sqrt{2\;\sqrt{2\;----\;\infty}}}}$ then $xy$ equals

asked Jan 20, 2014 by yamini.v

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Calculate the angular frequency of an electron occupying the second Bohr's orbit of $He^+$ ion.

asked Jan 16, 2014 by sreemathi.v

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A vector $a\hat i+b\hat j+c\hat k$ is such that its magnitude is $ |a|+|b|+|c|$. This is possible only if

asked Jan 7, 2014 by rvidyagovindarajan_1

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$f(x)$ is the integral of $\large\frac{2\sin x-\sin 2x}{x^3}$$x\neq 0$ find $\lim\limits_{x\to 0}f'(x)$

asked Dec 31, 2013 by sreemathi.v

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Find value of $\int \limits_0^1 \large\frac{x^{\alpha}-1}{\log x}$$dx \qquad \alpha \geq 0$

asked Dec 20, 2013 by meena.p

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Keeping in view the ' fluid mosaic model ' for the structure of cell membrane, which one of the following statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other ( described as flip flop movement ) ?

asked Dec 18, 2013 by thanvigandhi_1

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A wire loop PQRSP is constructed by joining two semi - circular coils of radii $'r_1'\: and \: 'r_2'$ respectively as shown in the figure. If the current flowing in the loop is $'i'$ , then the magnetic induction at the point $'O'$ is :

asked Nov 18, 2013 by thanvigandhi_1

1 answer

A long straight vertical conductor carries a current of 8 A in the upward direction. What is the magnitude of the resultant magnetic induction at a point in the horizontal plane at a distance of 4 cm from the conductor towards south ?

asked Nov 4, 2013 by thanvigandhi_1

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The number of turns in primary and secondary coils of a transformer is 50 and 200. If the current in the primary coil in 4A, then the current in the secondary coil is

asked Oct 20, 2013 by meena.p

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The X-ray spectrum coming from an X-ray tube

asked Oct 20, 2013 by thanvigandhi_1

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Currents flowing in each of the following circuits A and B respectively are :

asked Oct 14, 2013 by meena.p

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In moseley's law $ \sqrt v=a(z-b)$, the values of the screening constant for K-series and L-series of X-rays are respectively

asked Oct 12, 2013 by thanvigandhi_1

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The time constant of inductance coil is 3 m sec. When a $90\;\Omega$ resistance is joined in series, then the time constant becomes 0.5 m sec. The inductance and the resistance of the coil are :

asked Sep 30, 2013 by meena.p

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Int he circuit shown below, the ammeter reading is zero. Then the value of the resistance $R$ is :

asked Sep 24, 2013 by meena.p

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The work function of a metal is $2$ eV. If a radiation of wavelength 3000 A is incident on it, the maximum kinetic energy of the emitted photo electrons is

asked Sep 18, 2013 by meena.p

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In the set of integers with operation $^{\ast}$ defined by $a ^{\ast} b=a+b-ab,$ the value of $3^{\ast}(4^{\ast} 5)$ is

asked May 24, 2013 by poojasapani_1

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The asymptotes of the rectangular hyperbola $xy=c^{2} $ are

asked May 14, 2013 by poojasapani_1

1 answer

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