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A light string passes over a frictionless pulley. To one of its ends a mass of 6 kg is attached. To its other end a mass of 10 kg is attached (see figure). The tension in the thread will be *Image* ...

A square and a triangle have equal areas. If the ratio side of square and the height of triangle is 2/3 find the ratio of base to height. ...

A runs faster than E but not so fast as B and B runs faster than C but not as faster than D, who runs faster? ...

Arrange the following hydroxides in order of their solubility. Magnesium hydroxide(1),Calcium Hydroxide (2),Barium Hydroxide (3),Strontium Hydroxide (4) ...

Mass of a person sitting in a lift is 50 kg. If lift is coming down with a constant acceleration of 10 m/se{{c}^{2}}. Then the reading of spring balance will be (g=10m/se{{c}^{2}}) ...

In a cage, there are rabbits and parrots and the number of heads are 28 and feet are 72. Find the number of parrots and rabbits. ...

The apparent weight of the body, when it is travelling upwards with an acceleration of 2m/{{s}^{2}} and mass is 10 kg, will be ...

A, B and C are partners and invests in a business such that A spends 1/4th of the total. B spends 1/5th less than C. If C’s investment is 1/3, find the ratio of their profits on a amount of 4300. ...

Two numbers are in the ratio 5:6 and if 4 is subtracted from each, they are reduced to 2:3, then the highest number is ...

The water vapour pressure at 293 K is 2338 Pa and the vapour pressure of an aqueous solution is 2295.8 Pa. Determine its osmotic pressure at 313 Kif the solution density at this temperature is 1.01 g/cc. The molecular weight ...

what is the freezing pt of a aqueous sol. containing 5 % by mass urea,1% by massof KCl and 10% by mass glucose...(kfH20=1.86) a)290.2 K B)285.5K C)169.93K D)250K ...

A rod of length 'l' and mass M is at rest on a smooth plane. A ball of mass 'm' hits it at a length say ('l'/3) with a speed 'v' and then the ball stops. Find the location of the point on the rod whose locus (after the strike ...

In a H-atom the energy in the nth orbit is given as En = -13.6/n2 ev . Show that En+1 - En = -13.6*2/n3 for large n values How to solve?? ...

If P(x) is a polynomial such that P(x2+1)={P(x)}2+1 and P(0)=0,then ∂P/∂x is equal to: (a)-1 (b)0 (c)1 (d)none of these ...

consider a string attached to a pully(massless & frictionless).Take a part of string attached directly with the pully.Draw FBD.You will find that the string is pulled by two tensions of equal magnetude.As they are equal, so t ...

\hspace{-16}$4 balls are to be selected from a group of 11 bolls. 5 of them are of type A,\\\\ 2 of them are type B, 2 are of type R, one of type K and one of type D.\\\\ Q.In how many ways we can arrange 4 balls out of these ...

Half lihe is independent of the concentration of the reaction....After 10mins vol. of N2 gas is 10l and after complete reaction it is 50l ..hence rate const : a)(2.303/10)log 5 /min b)(2.303/10)log 1.25 c)(2.303/10)log 2 d)(2 ...

Somebody please post few topic wise questions of organic chemistry..especially to practice the applications of some reactions that are included in our JEE syllabus.eg.oxymercuration demercuration,or halohydrin formation etc.s ...

\hspace{-16}$Find Range of $\bf{f(x)=\frac{\sin^{-1}(x)}{2}+\frac{\cos^{-1}(x)}{3}+\frac{\tan^{-1}(x)}{4}}$ ...

A large conducting plane has surface charge density 1.0*10-4 C/m2 . Find the electrosatic energy stored in a cubical volume of edge 1.0 cm in front of the plane. ...

A body traveling along x-axis starts from origin with initial velocity Vo and retardation KV3 where V is instantaneous velocity of the body (A)velocity of the body at any instant is 2Vo2Kt+1 (B)velocity of the body at any ins ...

The x and y co-ordinate of the moving body are x=3t2and y=5t2 (A)velocity of the body is making angle tan-1 5/3 with +ve x-axis (B)the angle between velocity and acceleration is 0o (C)the path followed by the body is a straig ...

value of f(0), so that its function f(x)=( 1+2x - 1+2x )/x is continues is a)1/3 b)3 c)-1/3 d)0 ...

If f(x)=[x2]-[x]2 and x lies between [0,2] then the range of f(x) is: (a){-1,0} (b){-1,0,1} (c){0} (d){0,1,2} ...

sin ax+cos ax and |sin x|+|cos x| are periodic functions of same fundamental period then a is: (a)0 (b)1 (c)2 (d)4 ...

\hspace{-16}$The Minimum value of the Expression \\\\\\ $\bf{\sqrt{(x_{1}-x_{2})^2+\left(\frac{x^2_{1}}{20}-\sqrt{(17-x_{2})\times (x_{2}-13)}\right)^2}}$\\\\\\ Where $\bf{x_{1}\in \mathbb{R^{+}}}$ and $\bf{x_{2}\in (13,17)}$ ...

The condition that the chord x cos A+y sin A-p=0 of x2+y2-a2=0 may subtend a right angle at the center of the circle is: (a)a2=2p2 (b)p2=2a2 (c)a=2p (d)p=2a ...

\hspace{-16}$Find real values of $\bf{x}$ in $\bf{ {5}^{1+x}+{5}^{1-x}={2}^{1+x}+{2}^{1-x}+{3}^{1+x}+{3}^{1-x}}$ ...

this is only for ix - x which of the following salts are soluble: a) Hg2Cl2 b) CaSO4 c) (NH4)2S d)AL2(SO4)3 finding the chemistry section empty... posted the thread.. ...

I didn't understand the s,p,d,f configuration dat was mentioned in d "blue" booklet 4 class IX (Preparatory Course For batch 2010-2011) in d Periodic Table Chapter. Anyone plz xplain me dat! ...