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s i n space A plus s i n space 3 A plus s i n space 5 A plus s i n space 7 A equals

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  1. 4 s i n space A c o s space 2 A c o s space 4 A    
  2. 4 s i n space A c o s space 2 A c o s space 3 A    
  3. 4 c o s space A s i n space 2 A s i n space 4 A    
  4. 4 c o s space A c o s space 2 A s i n space 4 A    

    Answer:The correct answer is: 4 c o s space A c o s space 2 A s i n space 4 AApply SinC+SinD formula

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    Value of s i n to the power of 6 space 7 1 half to the power of ring operator plus c o s to the power of 6 space 7 1 half is

    s i n to the power of 6 end exponent invisible function application theta plus c o s to the power of 6 end exponent invisible function application theta equals 1 minus fraction numerator 3 over denominator 4 end fraction s i n to the power of 2 end exponent invisible function application 2 theta comma text  put  end text theta equals 7 fraction numerator 1 over denominator 2 end fraction

    Value of s i n to the power of 6 space 7 1 half to the power of ring operator plus c o s to the power of 6 space 7 1 half is

    maths-General
    s i n to the power of 6 end exponent invisible function application theta plus c o s to the power of 6 end exponent invisible function application theta equals 1 minus fraction numerator 3 over denominator 4 end fraction s i n to the power of 2 end exponent invisible function application 2 theta comma text  put  end text theta equals 7 fraction numerator 1 over denominator 2 end fraction
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    What is A union B for two mutually exclusive sets A and B?

    What is A union B for two mutually exclusive sets A and B?

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    The graph, shown in the adjacent diagram, represents the variation of temperature left parenthesis T right parenthesis of two bodies, x and y having same surface area, with time (t) due to the emission of radiation. Find the correct relation between the emissivity and absorptivity power of the two bodies.

    Rate of cooling left parenthesis negative fraction numerator d T over denominator d t end fraction right parenthesis proportional to emissivity(e)
    From the graph,
    open parentheses negative fraction numerator d T over denominator d t end fraction close parentheses subscript x end subscript greater than open parentheses negative fraction numerator d T over denominator d t end fraction close parentheses subscript y end subscript
    therefore e subscript x end subscript greater than e subscript y end subscript
    Further emissivity (e)proportional to absorptive power (a) (good absorbers are good emitters also)
    therefore a subscript x end subscript greater than a subscript y end subscript

    The graph, shown in the adjacent diagram, represents the variation of temperature left parenthesis T right parenthesis of two bodies, x and y having same surface area, with time (t) due to the emission of radiation. Find the correct relation between the emissivity and absorptivity power of the two bodies.

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    Rate of cooling left parenthesis negative fraction numerator d T over denominator d t end fraction right parenthesis proportional to emissivity(e)
    From the graph,
    open parentheses negative fraction numerator d T over denominator d t end fraction close parentheses subscript x end subscript greater than open parentheses negative fraction numerator d T over denominator d t end fraction close parentheses subscript y end subscript
    therefore e subscript x end subscript greater than e subscript y end subscript
    Further emissivity (e)proportional to absorptive power (a) (good absorbers are good emitters also)
    therefore a subscript x end subscript greater than a subscript y end subscript
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    If two metallic plates of equal thicknesses and thermal conductivities K subscript 1 end subscript and K subscript 2 end subscript are put together face to face and a common plate is constructed, then the equivalent thermal conductivity of this plate will be

    In series, R subscript e q end subscript equals R subscript 1 end subscript plus R subscript 2 end subscript rightwards double arrow fraction numerator 2 l over denominator K subscript e q end subscript A end fraction equals fraction numerator l over denominator K subscript 1 end subscript A end fraction plus fraction numerator l over denominator K subscript 2 end subscript A end fraction
    rightwards double arrow fraction numerator 2 over denominator K subscript e q end subscript end fraction equals fraction numerator 1 over denominator K subscript 1 end subscript end fraction plus fraction numerator 1 over denominator K subscript 2 end subscript end fraction rightwards double arrow K subscript e q end subscript equals fraction numerator 2 K subscript 1 end subscript K subscript 2 end subscript over denominator K subscript 1 end subscript plus K subscript 2 end subscript end fraction

    If two metallic plates of equal thicknesses and thermal conductivities K subscript 1 end subscript and K subscript 2 end subscript are put together face to face and a common plate is constructed, then the equivalent thermal conductivity of this plate will be

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    In series, R subscript e q end subscript equals R subscript 1 end subscript plus R subscript 2 end subscript rightwards double arrow fraction numerator 2 l over denominator K subscript e q end subscript A end fraction equals fraction numerator l over denominator K subscript 1 end subscript A end fraction plus fraction numerator l over denominator K subscript 2 end subscript A end fraction
    rightwards double arrow fraction numerator 2 over denominator K subscript e q end subscript end fraction equals fraction numerator 1 over denominator K subscript 1 end subscript end fraction plus fraction numerator 1 over denominator K subscript 2 end subscript end fraction rightwards double arrow K subscript e q end subscript equals fraction numerator 2 K subscript 1 end subscript K subscript 2 end subscript over denominator K subscript 1 end subscript plus K subscript 2 end subscript end fraction
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    Which of the following is set representing neither A nor B?

    Which of the following is set representing neither A nor B?

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    Which of the following is set representing B but not A?

    Which of the following is set representing B but not A?

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    Which of the following is set representing A but not B?

    Which of the following is set representing A but not B?

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    Which of the following is set B?

    Which of the following is set B?

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    Which of the following is set A?

    Which of the following is set A?

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    Which of the following is correct?

    Which of the following is correct?

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    In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like neither tea nor coffee?

    In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like neither tea nor coffee?

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    In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like either tea or coffee?

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    Let A equals left curly bracket A subscript 1 end subscript comma A subscript 2 end subscript comma A subscript 3 end subscript comma A subscript 4 end subscript comma A subscript 5 end subscript comma A subscript 6 end subscript right curly bracket be the set of six unit circles with centres C subscript 1 end subscript comma C subscript 2 end subscript comma C subscript 3 end subscript horizontal ellipsis C subscript 6 end subscript arranged as shown in the diagram. The relation R on A is defined by left parenthesis A subscript i end subscript comma A subscript j end subscript right parenthesis element of R less than rightwards double arrow C subscript i end subscript C subscript j end subscript less or equal than 2 square root of 2 then

    Let A equals left curly bracket A subscript 1 end subscript comma A subscript 2 end subscript comma A subscript 3 end subscript comma A subscript 4 end subscript comma A subscript 5 end subscript comma A subscript 6 end subscript right curly bracket be the set of six unit circles with centres C subscript 1 end subscript comma C subscript 2 end subscript comma C subscript 3 end subscript horizontal ellipsis C subscript 6 end subscript arranged as shown in the diagram. The relation R on A is defined by left parenthesis A subscript i end subscript comma A subscript j end subscript right parenthesis element of R less than rightwards double arrow C subscript i end subscript C subscript j end subscript less or equal than 2 square root of 2 then

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    Five rods of same dimensions are arranged as shown in figure. They have thermal conductivities K subscript 1 end subscript comma blank K subscript 2 end subscript comma blank K subscript 3 end subscript comma blank K subscript 4 end subscript a n d K subscript 5 end subscript. When points A blank a n d blank B are maintained at different temperature, no heat would flow through central rod, if

    The equivalent electrical circuit, figure in these cases is of Wheatstone bridge. No current would flow through central rod C D when the bridge is balanced. The condition for balanced Wheatstone bridge is fraction numerator P over denominator Q end fraction equals fraction numerator R over denominator S end fraction (in terms of resistances)
    fraction numerator 1 divided by K subscript 1 end subscript over denominator 1. K subscript 2 end subscript end fraction equals fraction numerator 1 divided by K subscript 3 end subscript over denominator 1 divided by K subscript 4 end subscript end fraction or fraction numerator K subscript 2 end subscript over denominator K subscript 1 end subscript end fraction equals fraction numerator K subscript 4 end subscript over denominator K subscript 3 end subscript end fraction
    Or K subscript 1 end subscript K subscript 4 end subscript equals K subscript 2 end subscript K subscript 3 end subscript

    Five rods of same dimensions are arranged as shown in figure. They have thermal conductivities K subscript 1 end subscript comma blank K subscript 2 end subscript comma blank K subscript 3 end subscript comma blank K subscript 4 end subscript a n d K subscript 5 end subscript. When points A blank a n d blank B are maintained at different temperature, no heat would flow through central rod, if

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    fraction numerator 1 divided by K subscript 1 end subscript over denominator 1. K subscript 2 end subscript end fraction equals fraction numerator 1 divided by K subscript 3 end subscript over denominator 1 divided by K subscript 4 end subscript end fraction or fraction numerator K subscript 2 end subscript over denominator K subscript 1 end subscript end fraction equals fraction numerator K subscript 4 end subscript over denominator K subscript 3 end subscript end fraction
    Or K subscript 1 end subscript K subscript 4 end subscript equals K subscript 2 end subscript K subscript 3 end subscript
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    In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like only coffee?

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