Maths-

#### The length of the chord joining the points and of the circle is

Maths-General

- 4
- 16
- 2
- 8

#### Answer:The correct answer is: 4

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### Related Questions to study

maths-

#### Assertion (A):If $a>0,b>0$ and $c>0$, then $(a+b+c)(\frac{1}{a}+\frac{1}{b}+\frac{1}{c})\ge 9$Reason (R): For positive numbers $a,$ $b,$ $c,$ $AM\ge GM$

$AM\ge GM$$=\succ \frac{\frac{1}{a}+\frac{1}{b}+\frac{1}{c}}{3}\ge \left(\begin{array}{cc}111& \\ -& -\\ \overline{b}a.& c\end{array}\right)\to \left(1\right)$$D:{x}^{2}-3x-4<0\supset (x+1)(x-4)<0\Rightarrow 1<x<4$${x}^{2}-3x+2>0Rejectx-2\left)\right(x-1)>0=x<1{a}^{r}x>2$$\frac{(a+b+c)}{3}\ge (abc{)}^{\frac{1}{3}}\to (2)$multiply (1) and (2)

#### Assertion (A):If $a>0,b>0$ and $c>0$, then $(a+b+c)(\frac{1}{a}+\frac{1}{b}+\frac{1}{c})\ge 9$Reason (R): For positive numbers $a,$ $b,$ $c,$ $AM\ge GM$

maths-General

$AM\ge GM$$=\succ \frac{\frac{1}{a}+\frac{1}{b}+\frac{1}{c}}{3}\ge \left(\begin{array}{cc}111& \\ -& -\\ \overline{b}a.& c\end{array}\right)\to \left(1\right)$$D:{x}^{2}-3x-4<0\supset (x+1)(x-4)<0\Rightarrow 1<x<4$${x}^{2}-3x+2>0Rejectx-2\left)\right(x-1)>0=x<1{a}^{r}x>2$$\frac{(a+b+c)}{3}\ge (abc{)}^{\frac{1}{3}}\to (2)$multiply (1) and (2)

maths-

#### Observe the following statements and choose correct answer Statement-I:A particle p moves along a straight line, starting from a fixed point ‘O’, obeying s=16+48t-${t}^{3}.$the direction of p when t=5 is along $\overline{OP}$ Statement-II: For a particle moving on a line, if velocity v<0 then the body moves towards the initial point.

Statement -I:

#### Observe the following statements and choose correct answer Statement-I:A particle p moves along a straight line, starting from a fixed point ‘O’, obeying s=16+48t-${t}^{3}.$the direction of p when t=5 is along $\overline{OP}$ Statement-II: For a particle moving on a line, if velocity v<0 then the body moves towards the initial point.

maths-General

Statement -I:

biology

#### The number of codons that code different amino acids is -

#### The number of codons that code different amino acids is -

biologyGeneral

biology

#### Finding of Miller's experiment on origin of life has provided evidence for:

#### Finding of Miller's experiment on origin of life has provided evidence for:

biologyGeneral

biology

#### Organisms which obtain energy by the oxidation of reduced inorganic compounds are called:

#### Organisms which obtain energy by the oxidation of reduced inorganic compounds are called:

biologyGeneral

biology

#### Darwin's finches represents:

#### Darwin's finches represents:

biologyGeneral

biology

#### Evolutionary convergence is the development of:

#### Evolutionary convergence is the development of:

biologyGeneral

biology

#### The material used in determining the age of a fossil is:

#### The material used in determining the age of a fossil is:

biologyGeneral

biology

#### Hugo deVries'theory of mutation:

#### Hugo deVries'theory of mutation:

biologyGeneral

biology

#### A definition of the term "Species" based on reproduction has distinct limitations, which include its

#### A definition of the term "Species" based on reproduction has distinct limitations, which include its

biologyGeneral

biology

#### Select the correct statement(s) A Microbial experiment show the pre-existing advantageous mutations when selected will result in the observation of new phenotypes Over few generation this would result in speciation B Neanderthal fossils represent a human relative C In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct These animals evolved into the first amphibian living on both land and water D Lichens can be used as water pollution indicators E Alfred Wallace, a natur st, who worked in Malay Archepelago (present Indonesia) has also come to similar conclusion on natural selection as reached by Darwinism

#### Select the correct statement(s) A Microbial experiment show the pre-existing advantageous mutations when selected will result in the observation of new phenotypes Over few generation this would result in speciation B Neanderthal fossils represent a human relative C In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct These animals evolved into the first amphibian living on both land and water D Lichens can be used as water pollution indicators E Alfred Wallace, a natur st, who worked in Malay Archepelago (present Indonesia) has also come to similar conclusion on natural selection as reached by Darwinism

biologyGeneral

physics-

#### A 20$\mu F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000$\Omega .$ What is the final charge on the capacitor?

We know that in steady state the capacitor behaves like as an open circuit $ie$, capacitor will not pass the current.
So, the potential difference across the capacitor = 45 V
Hence , the final charge on the capacitor is
$q=CV$
Here , $C=20\mu F,V=45V$
$\therefore q=20\times {10}^{-6}\times 45$
or$q=900\times {10}^{-6}$
or$q=9\times {10}^{-4}C$

#### A 20$\mu F$ capacitor is connected to 45 V battery through a circuit whose resistance is 2000$\Omega .$ What is the final charge on the capacitor?

physics-General

We know that in steady state the capacitor behaves like as an open circuit $ie$, capacitor will not pass the current.
So, the potential difference across the capacitor = 45 V
Hence , the final charge on the capacitor is
$q=CV$
Here , $C=20\mu F,V=45V$
$\therefore q=20\times {10}^{-6}\times 45$
or$q=900\times {10}^{-6}$
or$q=9\times {10}^{-4}C$

maths-

#### Statement ‐ I : The equation $z\overline{z}+\overline{a}z+a\overline{z}+\lambda =0$ where a is a complex number, represents a circle in Argand plane if $\lambda $ is real. Statement ‐II : The radius of the circle $z\overline{z}+\overline{a}z+a\overline{z}+\lambda =0$ is $\sqrt{\lambda -a\overline{a}}$

Result

#### Statement ‐ I : The equation $z\overline{z}+\overline{a}z+a\overline{z}+\lambda =0$ where a is a complex number, represents a circle in Argand plane if $\lambda $ is real. Statement ‐II : The radius of the circle $z\overline{z}+\overline{a}z+a\overline{z}+\lambda =0$ is $\sqrt{\lambda -a\overline{a}}$

maths-General

Result

physics-

#### Find the charge that will flow through the wire $A$ to $B$ if the switch $S$ is closed. The capacitance of each capacitor shown in the figure is$C$

#### Find the charge that will flow through the wire $A$ to $B$ if the switch $S$ is closed. The capacitance of each capacitor shown in the figure is$C$

physics-General

physics-

#### Two capacitors $A$ and $B$ with capacities ${C}_{1}$ and ${C}_{2}$ are charged to potential difference of ${V}_{1}$and${V}_{2}$, respectively. The plates of the capacitors are connected as shown in the figure with one wire free from each capacitor. The upper plate of $A$ is positive and that of $B$ is negative. An uncharged capacitor of capacitance ${C}_{3}$ and lead wires falls on the free ends to complete circuit, then

#### Two capacitors $A$ and $B$ with capacities ${C}_{1}$ and ${C}_{2}$ are charged to potential difference of ${V}_{1}$and${V}_{2}$, respectively. The plates of the capacitors are connected as shown in the figure with one wire free from each capacitor. The upper plate of $A$ is positive and that of $B$ is negative. An uncharged capacitor of capacitance ${C}_{3}$ and lead wires falls on the free ends to complete circuit, then

physics-General