Maths-
General
Easy

Question

Which function is shown in graph?

  1. Constant    
  2. Modulus    
  3. Identity    
  4. Signum function    

The correct answer is: Constant

Related Questions to study

General
Maths-

Which function is shown in graph?

Which function is shown in graph?

Maths-General
General
physics-

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

physics-General
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
General
physics-

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

physics-General
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
parallel
General
physics-

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.

physics-General
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
General
maths-

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

Apply SinC+SinD formula

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

maths-General
Apply SinC+SinD formula
General
maths-

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
parallel
General
Maths-

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?

Maths-General
General
Maths-

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

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

Maths-General
General
Maths-

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

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

Maths-General
parallel
General
Maths-

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

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

Maths-General
General
Maths-

Which of the following is set B?

Which of the following is set B?

Maths-General
General
Maths-

Which of the following is set A?

Which of the following is set A?

Maths-General
parallel
General
Maths-

Which of the following is correct?

Which of the following is correct?

Maths-General
General
Maths-

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?

Maths-General
General
Maths-

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?

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?

Maths-General
parallel

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