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Physics-

General

Easy

Question

A number of capacitors, each of equal capacitance $C$ , are arranged as shown in Fig. The equivalent capacitance between $A$ and $B$ is

$n^{2} C$
$(2 n + 1) C$
$\frac{(n - 1) n}{2} C$
$\frac{(n + 1) n}{2} C$

The correct answer is: $fraction numerator open parentheses n plus 1 close parentheses n over denominator 2 end fraction C$

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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

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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

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

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

physics-General

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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

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

Hugo deVries'theory of mutation:

Hugo deVries'theory of mutation:

parallel

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

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

Evolutionary convergence is the development of:

Evolutionary convergence is the development of:

Darwin's finches represents:

Darwin's finches represents:

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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:

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:

The number of codons that code different amino acids is -

The number of codons that code different amino acids is -

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Assertion (A):If $a > 0, b > 0$ and $c > 0$ , then $(a + b + c) (\frac{1}{a} + \frac{1}{b} + \frac{1}{c}) \geq 9$ Reason (R): For positive numbers $a,$ $b,$ $c,$ $A M \geq G M$

Assertion (A):If $a > 0, b > 0$ and $c > 0$ , then $(a + b + c) (\frac{1}{a} + \frac{1}{b} + \frac{1}{c}) \geq 9$ Reason (R): For positive numbers $a,$ $b,$ $c,$ $A M \geq G M$

The length of the chord joining the points $(4 \cos θ, 4 \sin θ)$ and $(4 \cos (θ + 60 °), 4 \sin (θ + 60 °)$ of the circle $x^{2} + y^{2} = 16$ is

The length of the chord joining the points $(4 \cos θ, 4 \sin θ)$ and $(4 \cos (θ + 60 °), 4 \sin (θ + 60 °)$ of the circle $x^{2} + y^{2} = 16$ is

In an orbital motion, the angular momentum vector is

In an orbital motion, the angular momentum vector is

Physics-General

parallel

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