General
Easy
Physics-

As shown in figure, the left block rests on a table at distance null = Normal reaction between A & B N subscript 2 end subscript = Normal reaction between B & C Which of the following statement(s) is/are correct ?

Physics-General

  1. If F subscript 1 end subscript < F subscript 2 end subscript then N subscript 1 end subscript > N subscript 1 end subscript    
  2. If F subscript 1 end subscript > F subscript 2 end subscript then N subscript 1 end subscript ¹N subscript 2 end subscript and F2 < N subscript 1 end subscript N subscript 2 end subscript < F subscript 1 end subscript    
  3. If F subscript 1 end subscript = F subscript 2 end subscript then N subscript 1 end subscript = N subscript 2 end subscript    
  4. If F subscript 1 end subscript= F subscript 2 end subscript then N subscript 1 end subscript ¹ N subscript 2 end subscript    

    Answer:The correct answer is: If F subscript 1 end subscript > F subscript 2 end subscript then N subscript 1 end subscript ¹N subscript 2 end subscript and F2 < N subscript 1 end subscript N subscript 2 end subscript < F subscript 1 end subscript

    Book A Free Demo

    +91

    Grade*

    Related Questions to study

    General
    physics-

    A block of mass 3 kg is at rest on a rough inclined plane as shown in the figure. The magnitude of net force exerted by the surface on the block will be (g=10 m/S subscript equals end subscript superscript 2 end superscript )

    A block of mass 3 kg is at rest on a rough inclined plane as shown in the figure. The magnitude of net force exerted by the surface on the block will be (g=10 m/S subscript equals end subscript superscript 2 end superscript )

    physics-General
    General
    physics-

    As shown in figure, the left block rests on a table at distance lambda  from the edge while the right block is kept at the same level so that thread is unstretched and does not sag and then released. What will happen first ?


    As shown in figure, the left block rests on a table at distance lambda  from the edge while the right block is kept at the same level so that thread is unstretched and does not sag and then released. What will happen first ?


    physics-General
    General
    physics-

    A block of mass of 10 kg lies on a rough inclined plane of inclination theta equals s i n to the power of negative 1 end exponent invisible function application open parentheses fraction numerator 3 over denominator 5 end fraction close parentheses with the horizontal when a force of 30N is applied on the block parallel to and upward the plane, the total force exerted by the plane on the block is nearly along (coefficient of friction is µ = fraction numerator 3 over denominator 4 end fraction ) ( g = 10 m/S subscript equals end subscript superscript 2 end superscript )

    A block of mass of 10 kg lies on a rough inclined plane of inclination theta equals s i n to the power of negative 1 end exponent invisible function application open parentheses fraction numerator 3 over denominator 5 end fraction close parentheses with the horizontal when a force of 30N is applied on the block parallel to and upward the plane, the total force exerted by the plane on the block is nearly along (coefficient of friction is µ = fraction numerator 3 over denominator 4 end fraction ) ( g = 10 m/S subscript equals end subscript superscript 2 end superscript )

    physics-General
    General
    physics-

    A block of mass m = 2 kg is resting on a rough inclined plane of inclination 300 as shown in figure. The coefficient of friction between the block and the plane is µ = 0.5. What minimum force F should be applied perpendicular to the plane on the block, so that block does not slip on the plane (g=10m/s to the power of 2 end exponent )

    A block of mass m = 2 kg is resting on a rough inclined plane of inclination 300 as shown in figure. The coefficient of friction between the block and the plane is µ = 0.5. What minimum force F should be applied perpendicular to the plane on the block, so that block does not slip on the plane (g=10m/s to the power of 2 end exponent )

    physics-General
    General
    physics-

    If the string is pulled down with a force of 120 N as shown in the figure, then the acceleration of 8 kg block would

    If the string is pulled down with a force of 120 N as shown in the figure, then the acceleration of 8 kg block would

    physics-General
    General
    physics-

    With what acceleration ‘a’ shown the elevator descends so that the block of mass M exerts a force of fraction numerator M g over denominator 10 end fraction blankon the weighing machine? [g = acceleration due to gravity]

    With what acceleration ‘a’ shown the elevator descends so that the block of mass M exerts a force of fraction numerator M g over denominator 10 end fraction blankon the weighing machine? [g = acceleration due to gravity]

    physics-General
    General
    physics-

    An astronaut accidentally gets separated out of his small spaceship accelerating in inter-stellar space at a constant acceleration of 10 m/S to the power of 2 end exponent . What is the acceleration of the astronaut at the instant he is outside the spaceship ?

    When the astronaut is outside the spaceship, the net external force (except negligible gravitational force due to spaceship) is zero as he is isolated from all interactions.

    An astronaut accidentally gets separated out of his small spaceship accelerating in inter-stellar space at a constant acceleration of 10 m/S to the power of 2 end exponent . What is the acceleration of the astronaut at the instant he is outside the spaceship ?

    physics-General
    When the astronaut is outside the spaceship, the net external force (except negligible gravitational force due to spaceship) is zero as he is isolated from all interactions.
    General
    physics-

    The two diodes A and B are biased as shown, then

    The two diodes A and B are biased as shown, then

    physics-General
    General
    physics-

    The value of current in the following diagram will be:

    The value of current in the following diagram will be:

    physics-General
    General
    physics-

    The value of current in the adjoining diagram will be:

    The value of current in the adjoining diagram will be:

    physics-General
    General
    physics-

    A semiconductor P-N junction is to be forward biased with a battery of e.m.f. 1.5 Volt. If a potential difference of 0.5V appears on the junction which does not depend on current and on passing 10mA current through the junction there occurs huge Joule loss, then to use the junction at 5mA current, the resistance required to be connected in its series will be:

    A semiconductor P-N junction is to be forward biased with a battery of e.m.f. 1.5 Volt. If a potential difference of 0.5V appears on the junction which does not depend on current and on passing 10mA current through the junction there occurs huge Joule loss, then to use the junction at 5mA current, the resistance required to be connected in its series will be:

    physics-General
    General
    maths-

      open parentheses lim for n not stretchy rightwards arrow straight infinity of   sum from r equals 1 to n of   open square brackets 1 over 2 to the power of r close square brackets close parentheses to the power of m(Where [ ] denotes GIF) is equal to

    lim for n not stretchy rightwards arrow straight infinity of   open square brackets 1 half plus 1 over 2 squared plus midline horizontal ellipsis plus 1 over 2 to the power of n close square brackets equals lim for n not stretchy rightwards arrow straight infinity of   open square brackets fraction numerator 1 half open parentheses 1 minus 1 over 2 to the power of n close parentheses over denominator 1 minus 1 half end fraction close square brackets
    equals lim for n not stretchy rightwards arrow straight infinity of   open square brackets 1 minus 1 over 2 to the power of n close square brackets equals 0 text  as  end text 1 over 2 to the power of n →∣ 0

      open parentheses lim for n not stretchy rightwards arrow straight infinity of   sum from r equals 1 to n of   open square brackets 1 over 2 to the power of r close square brackets close parentheses to the power of m(Where [ ] denotes GIF) is equal to

    maths-General
    lim for n not stretchy rightwards arrow straight infinity of   open square brackets 1 half plus 1 over 2 squared plus midline horizontal ellipsis plus 1 over 2 to the power of n close square brackets equals lim for n not stretchy rightwards arrow straight infinity of   open square brackets fraction numerator 1 half open parentheses 1 minus 1 over 2 to the power of n close parentheses over denominator 1 minus 1 half end fraction close square brackets
    equals lim for n not stretchy rightwards arrow straight infinity of   open square brackets 1 minus 1 over 2 to the power of n close square brackets equals 0 text  as  end text 1 over 2 to the power of n →∣ 0
    General
    physics-

    In Find the maximum angle of deviation for a prism with angle A equals 60 to the power of ring operator end exponent and mu = 1.5, If a constant magnetic field of strength 10 to the power of negative 4 end exponentT is applied parallel to the metal surface, then the radius of the largest circular path followed by the electrons will be :

    Radius of largest circular path followed by the electrons
    r equals fraction numerator m v over denominator e B end fraction equals fraction numerator 9.1 cross times 1 0 to the power of negative 31 end exponent cross times 7.036 cross times 1 0 to the power of 5 end exponent over denominator 1.6 cross times 1 0 to the power of negative 19 end exponent cross times 1 0 to the power of negative 4 end exponent end fraction = 0.04 m

    In Find the maximum angle of deviation for a prism with angle A equals 60 to the power of ring operator end exponent and mu = 1.5, If a constant magnetic field of strength 10 to the power of negative 4 end exponentT is applied parallel to the metal surface, then the radius of the largest circular path followed by the electrons will be :

    physics-General
    Radius of largest circular path followed by the electrons
    r equals fraction numerator m v over denominator e B end fraction equals fraction numerator 9.1 cross times 1 0 to the power of negative 31 end exponent cross times 7.036 cross times 1 0 to the power of 5 end exponent over denominator 1.6 cross times 1 0 to the power of negative 19 end exponent cross times 1 0 to the power of negative 4 end exponent end fraction = 0.04 m
    General
    maths-

    A quadratic equation f(x) = ax+ bx + c = 0 has positive distinct roots reciprocal of each other .Which one is correct ?

    table row cell alpha plus fraction numerator 1 over denominator alpha end fraction greater than 2 rightwards double arrow fraction numerator negative b over denominator a end fraction greater than 2 rightwards double arrow fraction numerator 2 a plus b over denominator a end fraction less than 0 end cell row cell rightwards double arrow a left parenthesis 2 a plus b right parenthesis less than 0 rightwards double arrow a f to the power of ´ end exponent left parenthesis 1 right parenthesis less than 0 end cell end table

    A quadratic equation f(x) = ax+ bx + c = 0 has positive distinct roots reciprocal of each other .Which one is correct ?

    maths-General
    table row cell alpha plus fraction numerator 1 over denominator alpha end fraction greater than 2 rightwards double arrow fraction numerator negative b over denominator a end fraction greater than 2 rightwards double arrow fraction numerator 2 a plus b over denominator a end fraction less than 0 end cell row cell rightwards double arrow a left parenthesis 2 a plus b right parenthesis less than 0 rightwards double arrow a f to the power of ´ end exponent left parenthesis 1 right parenthesis less than 0 end cell end table
    General
    physics-

    The sun deliverse 10 to the power of 3 end exponent W divided by m to the power of 2 end exponent of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m ,20m, will be:

    The sun deliverse 10 to the power of 3 end exponent W divided by m to the power of 2 end exponent of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m ,20m, will be:

    physics-General