Answers posted by vijayalakshmi.r

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State Amper’s circuital law. Using this law obtain an expression for the intensity of the magnetic field on the axis of a torodal solenoid for a current of i ampere.

answered Aug 14, 2016

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A900 pF capacitor is charged to 100 V by a battery. How much energy is store in the capacitor?

answered Aug 14, 2016

U= (1/2)CV^2 = (1/2) x 9x10^-8x100 = 4.5x10^-6J

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What are coherent sources? Green light of wavelength 5100 incident on a double slit. If the overall separation of 10 fringes in a screen 200 cm away from the slits is 2 cm, find the distance between the slits.

answered Aug 14, 2016

Two sources of light which continuously emit light of same frequency with a zero or constant phase d...

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height and speed at instant

answered Aug 14, 2016

Let the height at that instant be X m v^2 -0 = 2gx or v^2 =2gx Therefore K.E = (1/2)mv^2 = (1/2)mx...

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Time taken by ball to return is

answered Aug 14, 2016

https://clay6.com/qa/11009/a-very-broad-elevator-is-going-up-vertically-with-a-constant-acceleration...

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The refracting angle of an equilateral prism is A. Derive an expression for the angle of deviation for a ray of light incident on the refracting surface if the prism. Draw a neat curve to show the variation of deviation with angle of incident ray.

answered Aug 14, 2016

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reduce an equation into normal form

answered Aug 14, 2016

3x/5 + 4y/5 = 1 x/(5/3) + y/(5/4) =1

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electrostatics

answered Aug 14, 2016

By the principle of super position, the total force on the charge is Fvector = F1 vector+ F2 vector ...

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question based on friction

answered Aug 14, 2016

The force due to the pull of the string is T= mgsin teta + F. Given m= 5 kg, let G = 10 m/s^2 and te...

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A straight line slides along the axes (oblique) of x and y, and the difference of the intercepts is always proportional to the area it encloses. Show that the line always passes through a fixed point

answered Aug 14, 2016

https://clay6.com/qa/49326/a-straight-line-moves-so-that-the-sum-of-the-reciprocals-of-its-interce...

0 votes

Find the electric flux through a surface of area 50m2 in plane in the electric field

answered Aug 14, 2016

The magnitude of electric field is not given. Let us take it as E unitsN/C. Given S= 50m^2 Electric...

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Lines and Circles in analytic geometry and calculus

answered Aug 11, 2016

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formulate the linear programing problem mathematicallyand it slove it to minimize

answered Aug 10, 2016

From the given situations the equation can be formulated as 6x+4y is lesser than equal to 150 and 1...

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Form the differential equation of family of circles in the second quadrant and touching the coordinate axis

answered Aug 10, 2016

The equation is of the form (x+a)^2+(y-a)^2=a^2 Differentiating w.r.t x 2(x+a)+2(y-a).y'=0 Theref...

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class 11-kinematics-motion in a straight line-motion under gravity

answered Aug 9, 2016

v=0, a = -32ft/s^2, s= 9ft v^2-u^2=2as 0-u^2=2x-32x9 therefore u = 24ft/s v=u+at 0=24-32xt, the...

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silvering of planoconvex lens

answered Aug 8, 2016

It acts like a concave mirror

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compare the dispersive powers of two prisms

answered Aug 8, 2016

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Motion under Gravity

answered Aug 8, 2016

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A wire is kept horizontally at a place in the northern hemisphere of the earth. In what direction will force act on the wire due to the vertical component of the earth’s magnetic field, if electric current flows through the wire from south to north?

answered Aug 8, 2016

By fleming's left hand rule it can be predicted that the force will be acting downwards.

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electroststics physics class 12

answered Aug 7, 2016

Electric flux linked with any surface is defined as the total no: of electric lines of force that no...

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If the moment of inertia of a solid sphere of mass M and radius R is 2/5 MR2, what will be the radius of gyration?

answered Aug 4, 2016

https://clay6.com/qa/18796/the-moment-of-inertia-of-a-sphere-of-mass-m-and-radius-r-about-an-axis-pa...

-1 votes

Motion in a plane based on the path followed by the particle involving study of vectors

answered Aug 4, 2016

2. circular path. x=asinwt,or x/a = sinwt y=acoswt or y/a = coswt therefore x^2/a^2 +y^2/a^2 =- s...

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A body of mass 30kg with initial velocity of 5 m/s slides on a Teflon coated surface which has a friction co-efficient of .05. How far does the body slide before coming to rest?

answered Aug 4, 2016

F = Umg and F= ma therefore a=Ug g= 10m/s^2 and U = 0.05 Therefore a = 0.05x10 = 0.5m/s^2 v^2-u^...

1 vote

A body of mass m is moving in a circle of radius r and angular velocity ω. Find expression for centripetal force F acting on it using method of dimensional analysis.

answered Aug 4, 2016

Force depends on mass,velocity and radius [MLT^-2} = k[M}^a{LT^-1]^b[L]^c = M^aL^bT^-bL^c Equatin...

0 votes

2 short bar magnets of equal dipole moment M are fastened perpendicularly at their centres. The magnitude of 2 magnetic fields at a distance d from the centre on the bisector of the right angle is

answered Aug 4, 2016

B = U0/4pi [2M/d^3]. The resultant of B1 and B2= sqrt of M^2+M^2 = sqrt of 2M The magnitude of th...

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A simple electric motor has an armature resistance of 1  and runs from a d.c. source of 12 V. It draws a current of 2 A when unloaded. When a certain load is connected to it, its speed reduces by 10% of its initial value. The current drawn by the loaded motor is

answered Aug 4, 2016

The back emf= V-IR = 12-2 = 10V 10% od this emf is 1V Hence the current is IR = 1x1= 1A Hence t...

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Three tuning forks of frequencies 200, 203 and 207 Hertz are sounded together. Find out the beat frequency.

answered Aug 4, 2016

The no: of beats per second is 207 - 200 = 7beats /sec

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parabolas having vertices at the origin and foci on the x-axis

answered Aug 3, 2016

The equation of the parabola will be either y^2=4ax ory^2=-4ax, if it is open rightward or leftward ...

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About Logarithms????

answered Aug 3, 2016

log100=2log10=2 2u=-2 Therefore u=-1

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Find the standard deviation of new set

answered Aug 3, 2016

The variance remains unchanged

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The orthocenter of the triangle formed by the lines xy=0xy=0 and x+y=1x+y=1 is

answered Aug 2, 2016

Given xy=0 and x+y=1, indicates that the straight line passes through (1,0) qnd (0,1) Hence it is ...

0 votes

set builder form of {1,1/2,1/3,1/4,1/5}

answered Aug 2, 2016

{set of rational numbers 1/x:xbelongs to N}

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Motion in a straight line

answered Aug 1, 2016

v^2 - u^2 = 2as v=0, s= 80m, g = 10m/s^2 0 - u^2 = 2x10x80 = 1600 therefore u = 40m/s

0 votes

Motion in a straight line

answered Jul 30, 2016

v^2-u^2=2as In both the cases, V=0 - u1^2=2as1 and u2^2=2as2 Hence u1^2/u2^2=2as1/2as2 u1=1u and...

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Trigonometric functions

answered Jul 30, 2016

xy = (sec¢-tan¢)(cosec¢+cot¢) =sec¢cosec¢-tan¢cosec¢+sec¢cot¢-cot¢tan¢ =tan¢-sec¢+cosec¢-1 Theref

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understanding quadrilateral

answered Jul 30, 2016

The adjacent angles of a quadrilateral are supplementary. Hence 2x+10+3x-40=180 5x=210 x=42° Hen

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motion in a straight line

answered Jul 28, 2016

S = ut + [1/2]at^2 200cm = 2m = u(2)+[1/2]a(2)^2 2 = 2u+2a or u+a=1 420cm = 4.2m = u(6)+[1/2]a(6)...

0 votes

the equation of the plane is

answered Jul 28, 2016

The cordinates are A(9,0,0),B(0,12,0) and C(0,0,15) Hence the equation of the plane is x/9 +y/12 +z...

1 vote

find the differential equation of the family of curves y=c(x-c)^2 c is parameter

answered Jul 26, 2016

y = c(x-c)^2-------(1) y' = 2c(x-c)-------(2) dividing both hte equations y/y' = x-c/2 2y/y' = (...

0 votes

displacement and distance

answered Jul 26, 2016

distance = AB+BC+CA=10+10+10=30cm Displacement = AB = 10cm

0 votes

the sun's angular diameter is measured to be 1920" . The distance D of the sun from the earth is 1.496×10^11 m. Find the diameter of the sun

answered Jul 15, 2016

https://clay6.com/qa/41215/the-sun-s-angular-diameter-is-measured-to-be-1920-the-distance-d-of-the-s...

0 votes

What is the solution of |x|+|x+1|+|x+2|=0 ?Does it have a real or imaginary solution?

answered Jul 15, 2016

|x|+|x+1| = -|x+2| squaring on both sides x^2+(x+1)^2 = (x+2)^2 x^2+x^2+2x+2+2x(x+1) =0 =>3x^2...

0 votes

What would be the solution for |tan x| = |sin x|

answered Jul 15, 2016

|tanx|-|sinx| = 0 case 1 -tanx -(-sinx) = 0 -tanx + sinx =0 .That is -sinx/cosx + sinx = 0 or [-s...

0 votes

a (x,y) b (-5,7) c(-4,5) find relation between x and y

answered Jul 15, 2016

https://clay6.com/qa/57516/find-the-relation-between-x-and-y-if-the-points-a-x-y-b-5-7-and-c-4-5-are...

0 votes

There are 3 books on Mathematics, 4 on Physics and 5 on English. How many different collections can be made such that each collection consists of

answered Jul 14, 2016

The question seems to be incomplete. However you can click the below link to get the answer: ...

0 votes

Differential equations

answered Jul 14, 2016

https://clay6.com/qa/3224/form-the-differential-equation-of-all-circles-which-pass-through-origin-an...

0 votes

What is the effect on the interference fringe pattern in ydse when the screen is moved closer to the plane of the slits

answered Jul 14, 2016

The fringe width beta = Dlambda/d, where D is the distance between the source and the screen. As the...

0 votes

maths statistics class 11

answered Jul 14, 2016

X: A 2A 3A 4A 5A 6A f: 2 1 ...

0 votes

Physics- motion in a straight line

answered Jul 13, 2016

Speed of the train = 108km/hr = 30m/s speed of sound = 330m/s, actual frequency v= 3 v' = [V/V-Vs]...

0 votes

statics of probability

answered Jul 13, 2016

total no: of balls = 2+6 = 8 n(s) = 8C2 = 28 No; of ways by which we can get two different balls i...

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