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find the pint on the curve y^2=4x which is nearest to the point (2, -8) ...

In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If {{a}_{0}} is the radius of the ground state orbit, m is the mass, e is the charge on t ...

\int_{0}^{1}\frac{\log_{e}(1+x)}{1+x^2} ...

The value of cos {{1}^{o}}cos {{2}^{o}}cos {{3}^{o}}.....cos {{179}^{o}} is a) frac{1}{sqrt{2}} b) 0 c) 1 d) None of these ...

ABC is right angled triangle, right angled at B. Length of AC, and angle ∠BAC are given and We want to calculate the length of BC. What can we use? a) Sine b) Cos c) Tan d) Cot ...

How does black body radiation prove the particle nature of light? Why can't it be explained using the wave nature? ...

9)What type of change occurs when we boil rice? Physical Chemical Both None Your Answer b Correct Answer a Your Score-1 How is this possible? Please check the real answer. ...

Let R be a relation on N defined by x + 2y = 8 . The domain of R is a) {2, 4, 8} b) {2, 4, 6, 8} c) {2, 4, 6} d) {1, 2, 3, 4} ...

An element having b atomic no and a mass no. under goes a α emission then a β emission simultaneously .. then the new values of atomic and mass no. is a) a-2, b-4 b) a-4,b-1 c) a-4,b-2 d) none ...

1. lim x→0 (1+x)1/x-e+ 1/2 ex/x2 2. lim x→0( ax+bx+cx/3 )2/x ...

A 50-N object was lifted 2.0 m vertically and is being held there. How much work is being done in holding the box in this position? a) more than 100 J b) 100 J c) less than 100 J, but more than 0 J d) 0 J ...

You have gone to a game show where the objective is to win a car. The host leads you to a room where there are three absolutely identical doors. You are told that behind one of the doors is the car, and behind the other two i ...

A pump draws water from a tank and issues it from the end of a horse which is 2.5m vertically above the level from which the water is drawn. The cross sectional area of the hose is 10cm^{2} , and the water leaves the end of t ...

A force vec{F}=2hat{i}-3hat{j}+4hat{k} (N) acts on a particle which undergoes a displacement vec{r}=7hat{i}+3hat{j}-2hat{k} (M). Calculate the work done by the force a) 37 J b) -9 J c) 49 J d) 14 J ...

*Image* Pl gv solution ...

A particle moves in a straight line so that its velocity at any point is given by , where are constant. The acceleration is A. Zero B. Uniform C. Non-uniform D. Indeterminate ...

The undefined nuclear region of prokaryotes is also known as a) Nucleus b) Nucleolus c) Nucleic acid d) Nucleoid ...

Whats products we obtain when ethyl propanoate reacts with C6H5MgBr then H2O + NH4Cl? Please so the mechanism ...

Prove that : CotA + Cot(60+a) - Cot(60 -a) = 3Cot3A ...

Prove that: TanA + Tan(60+a) - Tan(60 -a) = 3Tan3A ...

A bulb is made using two filaments. A switch selects whether the filaments are used individually or in parallel. When used with a 15 V battery, the bulb can be operated at 5 W, 10 W or 15 W. What should be the resistances of ...

cos2x + cos22x + cos23x + cos24x=2...find the general value of x ...

\lim_{x\rightarrow \infty} 100[((x+1)(x+2)...(x+100))^{1/100} - x] ...

An object is lifted vertically 2.0 m and held there. If the object weighs 90 N, how much work was done in lifting it? a) 360 J b) 180 J c) 90 J d) 0 J ...

The angle of elevation of the sun, when the shadow of the pole is sqrt{3} times the height of the pole, is a) {{60}^{o}} b) {{30}^{o}} c) {{45}^{o}} d) {{15}^{o}} ...

Q1: *Image* a)-1 b)loge1 c)1 d)none q2: *Image* a) 1/2 sin3a b) 1/2 cosec2a c)sin3a d)cosec3a q3: *Image* a)1 b)-1 c)0 d)none q4:if 0<x<y then *Image* a)e b)x c)y d)none q5: *Image* a)1 b) sinx/x c) x/sinx d)none ...