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Physics-

General

Easy

Question

Atelescopehasanobjectiveoffocallength100cmandaneyepiece of focal length 5 cm. What is the magnifying power of the telescope when the fina limage is formedat the least distance of distinctvision

20
24
28
32

The correct answer is: 24

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The position of final image formed by the given lenscombination from the third lens will be at a distance of( $f subscript 1 end subscript$ =+10cm, $f subscript 2 end subscript$ =-10cmand $f subscript 3 end subscript$ =+30cm).

The position of final image formed by the given lenscombination from the third lens will be at a distance of( $f subscript 1 end subscript$ =+10cm, $f subscript 2 end subscript$ =-10cmand $f subscript 3 end subscript$ =+30cm).

Physics-General

pressure exerted by anelectro magnetic wave of intensity I(watts/ $m to the power of 2 end exponent$ )ona nonrefl ecting surface is[c ist he velocity of light]

pressure exerted by anelectro magnetic wave of intensity I(watts/ $m to the power of 2 end exponent$ )ona nonrefl ecting surface is[c ist he velocity of light]

Physics-General

The figure shows graphs of the electric field magnitude Eversus time t for four uniform electric fields, all containedwithin identical circular regions. Which of them is accordingtothemagnitudesofthemagneticfield?

The figure shows graphs of the electric field magnitude Eversus time t for four uniform electric fields, all containedwithin identical circular regions. Which of them is accordingtothemagnitudesofthemagneticfield?

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Intensity of electro magnetic wave will be

Intensity of electro magnetic wave will be

Physics-General

Thefigureheregivestheelectricfieldof anelectromagneticwave at a certain point and a certain instant. The wave istransporting energy in the negative z-direction. The directionofthe magneticfieldofthewaveatthatpointand instantis

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InanLCRcircuitasshownbelow bothswitches areopen initially. Now switch $S subscript 1 end subscript$ is closed, $S subscript 2 end subscript$ kept open. (q is chargeon the capacitor and, = RC is Capacitive time constant).Whichofthefollowingstatementiscorrect?

InanLCRcircuitasshownbelow bothswitches areopen initially. Now switch $S subscript 1 end subscript$ is closed, $S subscript 2 end subscript$ kept open. (q is chargeon the capacitor and, = RC is Capacitive time constant).Whichofthefollowingstatementiscorrect?

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In a nelectri calcircu itR ,L,Candana.c.voltagesourceare all connected in series. When L is removed from the circuit,the phase difference between the voltage the current in the circuit is n/3. If instead, C is removed from the circuit, the phase difference is again n/3. The power factor of the circuitis:

In a nelectri calcircu itR ,L,Candana.c.voltagesourceare all connected in series. When L is removed from the circuit,the phase difference between the voltage the current in the circuit is n/3. If instead, C is removed from the circuit, the phase difference is again n/3. The power factor of the circuitis:

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The inductance between A and D is

The inductance between A and D is

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The area in the first quadrant enclosed by the axis, the line $x equals y square root of 3$ and the circle $x to the power of 2 end exponent plus y to the power of 2 end exponent equals 4$ (greater area) is

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The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?

The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?

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If f(x) = $fraction numerator text x end text to the power of 2 end exponent over denominator text a+x end text end fraction blank$ then $blank f to the power of 1 end exponent open parentheses a close parentheses equals$

If f(x) = $fraction numerator text x end text to the power of 2 end exponent over denominator text a+x end text end fraction blank$ then $blank f to the power of 1 end exponent open parentheses a close parentheses equals$

$x greater than 0 comma x to the power of y end exponent equals blank e to the power of x minus y end exponent blank rightwards double arrow blank fraction numerator d y over denominator d x end fraction equals$

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If f: R $not stretchy rightwards arrow$ R is an even function having derivatives of all orders, then an odd function among the following is

If f: R $not stretchy rightwards arrow$ R is an even function having derivatives of all orders, then an odd function among the following is

If f: R $not stretchy rightwards arrow$ R is an even function which is twice differentiable on R and $f to the power of ´ ´ end exponent open parentheses pi close parentheses equals$

If f: R $not stretchy rightwards arrow$ R is an even function which is twice differentiable on R and $f to the power of ´ ´ end exponent open parentheses pi close parentheses equals$

Half life of $B i to the power of 210 end exponent$ is 5 days. If we start with 50,000
atoms of this isotope, the number of atoms left over after 10
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atoms of this isotope, the number of atoms left over after 10
days is

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