Physics-
General
Easy

Question

Three blocks are connected as shown in the figure on a horizontal friction less table. If M subscript 1 end subscript equals 1 k g comma M subscript 2 end subscript equals 8 k g comma M subscript 3 end subscript equals 27 k g text  and  end text T subscript 3 end subscript equals 36 N text  ,  end textthen T2 will be.

  1. 18 N    
  2. 3.375 N    
  3. 9 N    
  4. 1.75 N    

The correct answer is: 9 N

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General
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Two blocks of masses 2kg and 1kg are in contact with each other on a friction less table. When a horizontal force of 3N is applied on the block of mass 2kg, the value of the force of contact between the two blocks is.

Two blocks of masses 2kg and 1kg are in contact with each other on a friction less table. When a horizontal force of 3N is applied on the block of mass 2kg, the value of the force of contact between the two blocks is.

Physics-General
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Two masses m1 and m2 are placed on a smooth surface horizontally and connected by a light string as shown in figure A force F is applied on mass m1, then the tension in the string T2 is.

Two masses m1 and m2 are placed on a smooth surface horizontally and connected by a light string as shown in figure A force F is applied on mass m1, then the tension in the string T2 is.

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Two masses m1 and m2 are suspended from a rigid support through a light string. The tension in the string between support and mass m1 is.

Two masses m1 and m2 are suspended from a rigid support through a light string. The tension in the string between support and mass m1 is.

Physics-General
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General
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If the angle of friction is 45degree, then the coefficient of static friction is.

If the angle of friction is 45degree, then the coefficient of static friction is.

Physics-General
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A block of mass 2kg lies on a horizontal surface and it is subjected to a vertical downward force 30N as shown in figure. The contact force between the block and surface is.

A block of mass 2kg lies on a horizontal surface and it is subjected to a vertical downward force 30N as shown in figure. The contact force between the block and surface is.

Physics-General
General
Physics-

The free body diagram of block 'm' is

The free body diagram of block 'm' is

Physics-General
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General
Maths-

If vertical line z vertical line equals 1 and z not equal to 1, then all the values of fraction numerator z over denominator 1 minus z to the power of 2 end exponent end fraction lie on

Therefore the correct option is choice 4

If vertical line z vertical line equals 1 and z not equal to 1, then all the values of fraction numerator z over denominator 1 minus z to the power of 2 end exponent end fraction lie on

Maths-General

Therefore the correct option is choice 4

General
Maths-

If z is a complex number such that vertical line equals vertical line greater or equal than 2 then the minimum value of ∣ z plus fraction numerator 1 over denominator 2 end fraction is is strictly

Therefore the correct option is choice 4

If z is a complex number such that vertical line equals vertical line greater or equal than 2 then the minimum value of ∣ z plus fraction numerator 1 over denominator 2 end fraction is is strictly

Maths-General

Therefore the correct option is choice 4

General
Maths-

If open vertical bar fraction numerator z subscript 1 end subscript over denominator z subscript 2 end subscript end fraction close vertical bar equals 1 and a r g invisible function application open parentheses z subscript 1 end subscript z subscript 2 end subscript close parentheses equals 0 then

Therefore the correct option is choice 3

If open vertical bar fraction numerator z subscript 1 end subscript over denominator z subscript 2 end subscript end fraction close vertical bar equals 1 and a r g invisible function application open parentheses z subscript 1 end subscript z subscript 2 end subscript close parentheses equals 0 then

Maths-General

Therefore the correct option is choice 3

parallel
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Maths-

One of the values of open parentheses cis invisible function application fraction numerator pi over denominator 6 end fraction close parentheses to the power of fraction numerator 1 over denominator 2 end fraction end exponent plus open parentheses cis invisible function application fraction numerator negative pi over denominator 6 end fraction close parentheses to the power of fraction numerator 11 over denominator 2 end fraction end exponent

One of the values of open parentheses cis invisible function application fraction numerator pi over denominator 6 end fraction close parentheses to the power of fraction numerator 1 over denominator 2 end fraction end exponent plus open parentheses cis invisible function application fraction numerator negative pi over denominator 6 end fraction close parentheses to the power of fraction numerator 11 over denominator 2 end fraction end exponent

Maths-General
General
Maths-

If the distance between the points left parenthesis a c o s invisible function application theta comma a s i n invisible function application theta right parenthesis, left parenthesis a c o s invisible function application ϕ comma a s i n invisible function application ϕ right parenthesis is 2 a
then theta equals 6
Assertion (A): If 2 s i n invisible function application fraction numerator theta over denominator 2 end fraction equals square root of 1 plus s i n invisible function application theta end root plus square root of 1 minus s i n invisible function application theta end root, then fraction numerator theta over denominator 2 end fraction lies between
2 n pi plus fraction numerator pi over denominator 4 end fraction text  and  end text 2 n pi plus fraction numerator 3 pi over denominator 4 end fraction left parenthesis n element of z right parenthesis
Reason left parenthesis R right parenthesis colon If fraction numerator theta over denominator 2 end fraction element of open parentheses fraction numerator pi over denominator 4 end fraction comma fraction numerator 3 pi over denominator 4 end fraction close parentheses, then s i n invisible function application fraction numerator theta over denominator 2 end fraction greater than 0

If the distance between the points left parenthesis a c o s invisible function application theta comma a s i n invisible function application theta right parenthesis, left parenthesis a c o s invisible function application ϕ comma a s i n invisible function application ϕ right parenthesis is 2 a
then theta equals 6
Assertion (A): If 2 s i n invisible function application fraction numerator theta over denominator 2 end fraction equals square root of 1 plus s i n invisible function application theta end root plus square root of 1 minus s i n invisible function application theta end root, then fraction numerator theta over denominator 2 end fraction lies between
2 n pi plus fraction numerator pi over denominator 4 end fraction text  and  end text 2 n pi plus fraction numerator 3 pi over denominator 4 end fraction left parenthesis n element of z right parenthesis
Reason left parenthesis R right parenthesis colon If fraction numerator theta over denominator 2 end fraction element of open parentheses fraction numerator pi over denominator 4 end fraction comma fraction numerator 3 pi over denominator 4 end fraction close parentheses, then s i n invisible function application fraction numerator theta over denominator 2 end fraction greater than 0

Maths-General
General
Maths-

If c o s e c to the power of 6 end exponent invisible function application q minus c o t to the power of 6 end exponent invisible function application q equals a c o t to the power of 4 end exponent invisible function application q plus b c o t to the power of 2 end exponent invisible function application q plus c then a+b+c=

So here we have used the trigonometric functions and trigonometric formulas to solve this, the algebraic expressions were used to formulate it. Here the answer of a+b+c is 7.

If c o s e c to the power of 6 end exponent invisible function application q minus c o t to the power of 6 end exponent invisible function application q equals a c o t to the power of 4 end exponent invisible function application q plus b c o t to the power of 2 end exponent invisible function application q plus c then a+b+c=

Maths-General

So here we have used the trigonometric functions and trigonometric formulas to solve this, the algebraic expressions were used to formulate it. Here the answer of a+b+c is 7.

parallel
General
Maths-

If a,b,c are the sides of the triangle ABC such that open parentheses 1 plus fraction numerator b minus c over denominator a end fraction close parentheses to the power of a end exponent open parentheses 1 plus fraction numerator c minus a over denominator b end fraction close parentheses to the power of b end exponent open parentheses 1 plus fraction numerator a minus b over denominator c end fraction close parentheses to the power of c end exponent greater or equal than 1
Then the triangle A B C must be

If a,b,c are the sides of the triangle ABC such that open parentheses 1 plus fraction numerator b minus c over denominator a end fraction close parentheses to the power of a end exponent open parentheses 1 plus fraction numerator c minus a over denominator b end fraction close parentheses to the power of b end exponent open parentheses 1 plus fraction numerator a minus b over denominator c end fraction close parentheses to the power of c end exponent greater or equal than 1
Then the triangle A B C must be

Maths-General
General
Maths-

If s i n invisible function application y equals x s i n invisible function application left parenthesis a plus y right parenthesis and fraction numerator d y over denominator d x end fraction equals fraction numerator A over denominator 1 plus x to the power of 2 end exponent minus 2 x c o s invisible function application a end fraction then the value of blank to the power of ´ end exponent A ' is

Therefore the correct option is choice 3

If s i n invisible function application y equals x s i n invisible function application left parenthesis a plus y right parenthesis and fraction numerator d y over denominator d x end fraction equals fraction numerator A over denominator 1 plus x to the power of 2 end exponent minus 2 x c o s invisible function application a end fraction then the value of blank to the power of ´ end exponent A ' is

Maths-General

Therefore the correct option is choice 3

General
Maths-

The maximum value of open parentheses c o s invisible function application alpha subscript 1 end subscript close parentheses open parentheses c o s invisible function application alpha subscript 2 end subscript close parentheses horizontal ellipsis horizontal ellipsis. open parentheses c o s invisible function application alpha subscript n end subscript close parentheses under the restriction
0 less or equal than alpha subscript 1 end subscript comma alpha subscript 2 end subscript horizontal ellipsis horizontal ellipsis horizontal ellipsis subscript n end subscript less or equal than fraction numerator pi over denominator 2 end fraction & c o t invisible function application alpha subscript 1 end subscript times c o t invisible function application alpha subscript 2 end subscript horizontal ellipsis horizontal ellipsis c o t invisible function application alpha subscript n end subscript equals 1 is

The maximum value of open parentheses c o s invisible function application alpha subscript 1 end subscript close parentheses open parentheses c o s invisible function application alpha subscript 2 end subscript close parentheses horizontal ellipsis horizontal ellipsis. open parentheses c o s invisible function application alpha subscript n end subscript close parentheses under the restriction
0 less or equal than alpha subscript 1 end subscript comma alpha subscript 2 end subscript horizontal ellipsis horizontal ellipsis horizontal ellipsis subscript n end subscript less or equal than fraction numerator pi over denominator 2 end fraction & c o t invisible function application alpha subscript 1 end subscript times c o t invisible function application alpha subscript 2 end subscript horizontal ellipsis horizontal ellipsis c o t invisible function application alpha subscript n end subscript equals 1 is

Maths-General
parallel

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