Ask & Answer: India's Largest Education Community

Magnify power of telescope for far point is given as

$m=\frac{{\theta }_i}{{\theta }_0}=\frac{f_0}{f_e}$

$?{\theta }_i={\theta }_0\left(\frac{f_0}{f_e}\right){=1}^0\left(\frac{100}{5}\right)={20}^0$

$?G^0=-2.303RT\log ?K$

$=-2.303\times R\times 300\times \log ?{10}^{10}$

$=-2.303\times 3000R$

=-6909 R

It depends on the requirement. But in most cases, AC generator will be preferred over a DC one. DC generator can be useful in cases where you just require a continuous supply of current without any disturbance. But if you want a good quality current to be transmitted over longer distances for significant period of time, go for an AC generator. AC generators are much more reliable and also have longer life durations.

For thin prism, deviation  $=\left(\mu -1\right)A$

$N{a}_{2}C{O}_3+HCl\stackrel{Phenolphthalein}{\to }NaHC{O}_3+NaCl$

$E_{N{a}_{2}C{O}_3}=\frac{M_{N{a}_{2}C{O}_3}}{n-factor}=\frac{106}{1}=106$

Kindly consider the following figure

For esters, prefix used is alkoxycarbony.

Kindly consider the following figure'

The key difference between these two is slip rings are the rings used in an AC generator for generating AC current. While commutators are used in DC generators to produce DC current. If we talk about the shape, slip ring is a continuous circle while commutator is divided into two halves.

$\left. [Co{\left(N{H}_3\right)}_{5}Cl\right]C{l}_2+AgN{O}_3\left(excess\right)\to \left. [Co{\left(N{H}_3\right)}_{5}Cl\right]{\left(N{O}_3\right)}_2+2AgCl\downarrow$

Secondary valence of $Co$ $$ in $\left. [Co{\left(N{H}_3\right)}_{5}Cl\right]C{l}_2$ $\left. [{\left({}_{}\right)}_{}\right]{}_{}$ is six.

Power of bulb = 662 watt = 662 Js^-1

Energy of one photon $=\frac{6.62*{10}^{-34}*3*{10}^8}{300*{10}^{-9}}$ $\frac{{}^{}{}^{}}{{}^{}}$

$=6.62*{10}^{-19}J$

Number of photons emitted $=\frac{662}{6.62*{10}^{-19}}$ $\frac{}{{}^{}}$

$={10}^{21}{s}^{-1}$

Inside a spherical shell gravitational field is zero, so net force acting on a particle placed inside it is also zero.

Total energy of a bound system is always negative.

Alternating Current is the type of current whose direction isn't uniform and can change constantly. On the other hand, dc current is the type of current who can have a single direction only. DC is a comparatively low quality current as compared to an AC current.

$N{H}_3$ is recovered when solution containing $N{H}_{4}Cl$ is treated with $Ca{\left(OH\right)}_2$   (slaked lime).

$2N{H}_{4}Cl+Ca{\left(OH\right)}_2\to 2N{H}_3+CaC{l}_2+H_{2}O$ .

$u_{rm{s}_1}=\sqrt[]{\frac{3RT}{M}}$

When the temperature is tripled,

$u_{rm{s}_2}=\sqrt[]{\frac{3R\left(3T\right)}{M}}=\sqrt[]{3}*u_{rm{s}_1}=1.73*u_{rm{s}_1}$

According to this chapter, a galvanometer is used to find and measure the small electric currents in a circuit. The principle that works in a galvanometer is the electromagnetic induction.

Kindly consider the following figure