Recent questions tagged q109

An LPG cylinder contain 15kg of butane gas at $27^{\large\circ}C$ and 10 bar pressure. The cylinder linked and it was found that after 4 days , the mass of the gas left in cylinder was only 10 kg. How much drop in pressure was occured in each day?

asked Mar 1, 2014 by sharmaaparna1

1 answer

In the reaction

asked Feb 28, 2014 by meena.p

1 answer

In the following compounds the order of acid strength is

asked Feb 26, 2014 by sreemathi.v

1 answer

Find the length of latus rectum for the hyperbola $\large\frac{x^2}{36}-\frac{y^2}{16}$$=1$?

asked Feb 10, 2014 by sreemathi.v

1 answer

For $0\;<\;x\;<\;\pi$, the values of x which satisfies $1+|cos\;x|+|cos\;x|^2+|cos\;x|^3+$....$\infty$ = $2^4$ are

asked Jan 20, 2014 by yamini.v

1 answer

An electron beam can undergo diffraction by crystals.Through what potential should a beam of electrons be accelerated so that its wavelength becomes equal to $1.54A^{\large\circ}$?

asked Jan 16, 2014 by sreemathi.v

1 answer

If the vectors $\overrightarrow a+\lambda \overrightarrow b+3\overrightarrow c,\:-2\overrightarrow a+3\overrightarrow b-4\overrightarrow c\:and\:\overrightarrow a-3\overrightarrow b+5\overrightarrow c$ are coplanar and $\overrightarrow a,\overrightarrow b,\overrightarrow c$ are non coplanar, then $\lambda=?$

asked Jan 6, 2014 by rvidyagovindarajan_1

1 answer

$\lim\limits_{x\to \infty}\big[\large\frac{x^2+5x+3}{x^2+x+3}\big]^x$

asked Dec 31, 2013 by sreemathi.v

1 answer

Integrate : $\int \large\frac{\tan^{-1} x}{1+x^2}$$ dx$

asked Dec 19, 2013 by meena.p

1 answer

Which one of the following is not a characteristic of phylum Annelida ?

asked Dec 18, 2013 by thanvigandhi_1

0 answers

The plates in a parallel plate capacitor are seperated by a distance 'd' with air as a medium between the plates. In order to increase the capacity by 66%, a dielectric slab of dielectric constant '5' is introduced between the plates. What is the thickness of the dielectric slab ?

asked Nov 17, 2013 by thanvigandhi_1

1 answer

Four positive point chargers (+q) are kept at the four corners of a square of side 'l' . The net electric field at the midpoint of any one side of the square is , $ \bigg( take\: \large\frac{1}{4 \pi \varepsilon_{\circ}} = K \bigg)$

asked Nov 2, 2013 by thanvigandhi_1

1 answer

A magnetic dipole is placed under the effect of two magnetic fields inclined at $ 75^{\circ}$ to each other. One of the fields has a magnetic Induction of $ 1.5 \times 10^{-2}T$. The magnet comes to rest at an angle of $30^{\circ}$ with the direction of this field . The magnitude of the other field is

asked Oct 20, 2013 by thanvigandhi_1

1 answer

A change of $1 \mu C$ is divided into two parts such that their charges are in the ratio of $2:3$. These two charges are kept at a distance 1 m apart in vacuum. Then, the electric force between them (in Newtons) is

asked Oct 20, 2013 by meena.p

1 answer

A cell in secondary circuit gives null deflection for $2.5\;m$ length of potentiometer having 10 m length of wire. If the length of the potentiometer wire is increased by 1 m without changing the cell in the primary, the position of the null point now is :

asked Oct 14, 2013 by meena.p

1 answer

Two cylinders A and B fitted with pistons contain equal amount an ideal diatomic gas at 300 K. Piston of A is free to move and piston B is fixed. Same amount of heat is given to the gases in the two cylinders. Temperature of the gas in cylinder A increases by 30 K. Then, increase in temperature of the gas in the cylinder B is ( $ \gamma$ 1.4 for diatomic gas)

asked Oct 12, 2013 by thanvigandhi_1

1 answer

The potential difference between two parallel plates is $10^4\;volts$. If the plates are separated by 0.5 cm, the force on an electron between the plates is :

asked Sep 30, 2013 by meena.p

1 answer

A ray of light refracts from medium 1 into a thin layer of medium 2, crosses the layer and is incident at the critical angle on the interface between the medium 2 and 3 as shown in figure. If the angle of incidence of ray is $\theta$, the value of $\theta$ is :

asked Sep 24, 2013 by meena.p

3 answers

Two metal plates of area 'A' from a parallel plate capacitor with air in between the plates. The distance between the plate is 'd'. A metal plate of thickness $\large\frac{d}{2}$ and of the same area A is inserted between the plates to from two capacitors of capacitance $C_1$ and $C_2$ as shown in the figure. If the effective capacitance of the two capacitor is $C'$ and the capacitance of the capacitor initially is $C$, then $\large\frac{C'}{C}$ is

asked Sep 18, 2013 by meena.p

1 answer

The conditional statement $ p\to q$ is equivalent to

asked May 24, 2013 by poojasapani_1

1 answer

The equation of the chord of contact of tangents from $(2 , 1 )$ to the hyperbola $\large\frac{x^{2}}{16}-\frac{y^{2}}{9}$$=1 $ is

asked May 14, 2013 by poojasapani_1

1 answer

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