Recent questions tagged q57

A current carrying circular loop of radius R is placed in the x-y plane with center at the orgin . Half of the loop with $ x >0$ is now bent so that it now lies in the $y-z$ plane .

asked Jul 29, 2015 by meena.p

1 answer

Assume the dipole model for earth's magnetic field B which is given by $B_v$ =Vertical component of magnetic field $=\large\frac{\mu_0}{4 \pi}.\frac{2m \cos \theta}{r}$ $B_H$= Horizontal component of magnetic field $\qquad= \large\frac{\mu_o}{4 \pi} \frac{\sin \theta m}{r^3}$ $\theta= 90^{\circ}$- latitude as measured from magnetic equator . Find loci of points for which dip angle is $\pm 45^{\circ}$

asked Jul 16, 2015 by meena.p

1 answer

By what percentage will have the illumination of amp decrease if the current drops by $20\%$ ?

asked Jun 30, 2015 by meena.p

1 answer

The eccentricity of the hyperbola whose latus rectum is $8$ and conjugate axis is equal to half of the distance between the foci is

asked Oct 17, 2014 by sreemathi.v

1 answer

Heating of diborane with excess of ammonia to a high temperature yields

asked Jul 27, 2014 by thanvigandhi_1

1 answer

Match the question given under Column $C_1$ with their appropriate answer given under the Column $C_2$ for the following :

asked Jul 9, 2014 by thanvigandhi_1

1 answer

True-or-False:Eighteen guests are to be seated,half on each side of a long table.Four particular guests desire to sit on one particular side and three others on other side of the table.The number of ways in which the seating arrangements can be made is $\large\frac{11!}{5!6!}$$(9!)(9!)$

asked May 16, 2014 by sreemathi.v

1 answer

If $\tan\alpha=\large\frac{1}{7}$$,\tan \beta=\large\frac{1}{3}$,then $\cos 2\alpha$ is equal to

asked Apr 21, 2014 by sreemathi.v

1 answer

If $(10)^9+2(11)^1 (10)^8+ 3(11)^7+.....+10(11)^9=k(10)^9,$ then $k$ is equal to

asked Apr 7, 2014 by meena.p

1 answer

Insulin production and its action in human body are responsible for the level of diabetes The compound belong to which of the following categories?

asked Mar 29, 2014 by thanvigandhi_1

1 answer

Heating of ore in the absence of air below its melting point is called

asked Mar 18, 2014 by meena.p

1 answer

The standard enthalpy of formation of $NH_3$ is $-46\: kJ/mol.$ If the enthalpy of formation of $H_2$ from its atoms is $-436\: kJ/mol$ and that of $N_2$ is $-712\: kJ/mol$, the average bond enthalpy of $N-H$ bond in $NH_3$ is

asked Mar 17, 2014 by thanvigandhi_1

1 answer

Which one of the following statements is not true?

asked Mar 11, 2014 by thanvigandhi_1

1 answer

Which one of the following molecule shows the highest angle

asked Mar 6, 2014 by sreemathi.v

1 answer

The hybridisation of Sn in $SnCl_6^{2-}$ is

asked Mar 5, 2014 by sreemathi.v

1 answer

Which of the following reaction is correctly formulated?

asked Mar 4, 2014 by sreemathi.v

1 answer

The major product of the following reaction is :

asked Feb 24, 2014 by meena.p

1 answer

Predict the product in the following reaction:

asked Feb 21, 2014 by sreemathi.v

1 answer

$Zn/Zn^{+2}(C_1)\parallel Zn^{+2}(C_2)/Zn$.For this cell $\Delta G$ is -ve if

asked Feb 17, 2014 by sreemathi.v

1 answer

Find the point of intersection of tangents at any two points on the parabola $y^2=4ax$?

asked Feb 6, 2014 by sreemathi.v

1 answer

A drop of liquid evaporates at a rate proportional to its area of surface. If the radius initially is $4\;mm$ and $5$ minutes later, the radius is reduced to $2\; mm$, find radius of drop as a function of time ?

asked Feb 6, 2014 by meena.p

1 answer

Select the correct IUPAC name for: $[Co(NH_3)_6]^{2+}$

asked Feb 3, 2014 by sreemathi.v

1 answer

Lanthanides and actinides resemble in

asked Jan 30, 2014 by sreemathi.v

2 answers

The transconductance of a transistor used as an amplifier in common emitter mode is $0.1 \;mho.$ When a signal of 10 mv is added to base emitter voltage change in collector current is

asked Jan 28, 2014 by meena.p

1 answer

In the hardening stage of plaster of paris,the compound formed is

asked Jan 28, 2014 by sreemathi.v

1 answer

The A.M of $a, a+d, a+2d.....a+2nd$ is

asked Jan 25, 2014 by thanvigandhi_1

1 answer

$CO+H_2$ is known as

asked Jan 23, 2014 by sreemathi.v

1 answer

The disease caused due to excess of fluoride

asked Jan 21, 2014 by sreemathi.v

1 answer

The De-Brogile wavelength of a tennis ball mass 60g moving with a velocity of 10m per second is approximately

asked Jan 13, 2014 by sreemathi.v

1 answer

If $O$ is origin, $|\overrightarrow{OP}|=3$ with $d.r.=(-1,2,-2)$ then the coordinate of $P$ is ?

asked Jan 3, 2014 by rvidyagovindarajan_1

2 answers

Which term of the series $\frac{16}{9}$, $\frac{4}{3}$, $1$, $\frac{3}{4}$------is $\frac{243}{1024}$

asked Jan 3, 2014 by yamini.v

1 answer

If the function $f(x)=\left\{\begin{array}{1 1}\large\frac{x^2-(A+2)x+A}{x-2}&x\neq 2\\2&x=2\end{array}\right.$ is continuous at $x=2$ then

asked Dec 24, 2013 by sreemathi.v

1 answer

If $g(x) =\large\frac{f(x) +f(-x)}{2}$ defined over $[-3,3]$ and $f(x)=2x^2-4x+1$ then $\int \limits_{-3}^3=?$

asked Dec 17, 2013 by meena.p

1 answer

Which of the following are not state functions ?

asked Dec 16, 2013 by thanvigandhi_1

0 answers

Feathers can seen only in nestlings :

asked Dec 9, 2013 by thanvigandhi_1

1 answer

The dention in rabbit is heterodont and

asked Dec 2, 2013 by thanvigandhi_1

0 answers

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