Jharkhand Intermediate Exam Physics 2024
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Questions and Answers

What is the total duration of the examination?

  • 4 hours
  • 3 hours 15 minutes (correct)
  • 2 hours 45 minutes
  • 3 hours 30 minutes

    • How many marks does Part-A of the examination carry?

  • 70 marks
  • 25 marks (correct)
  • 50 marks
  • 15 marks

    • What type of questions are included in Part-B of the examination?

  • True or False
  • Subjective type questions (correct)
  • Practical oriented questions
  • MCQ and Fill in the blanks

    • Which section of Part-B includes questions that must be answered in a maximum of one sentence?

    <p>Section-A</p> Signup and view all the answers

    How many questions must a candidate answer from Section-B?

    <p>6 questions</p> Signup and view all the answers

    What is the total number of questions in Part-B?

    <p>23 questions</p> Signup and view all the answers

    What is the scoring structure for incorrect answers?

    <p>No negative marking</p> Signup and view all the answers

    What is the maximum word limit for answers in Section-C?

    <p>250 words</p> Signup and view all the answers

    What is the total number of marks for Part-B?

    <p>45 marks</p> Signup and view all the answers

    In how many sections is Part-B divided?

    <p>Three sections</p> Signup and view all the answers

    What is the ratio of specific resistances of two copper wires of lengths l and 2l with radii r and 2r respectively?

    <p>2:1</p> Signup and view all the answers

    What is the force of attraction between two long parallel wires carrying currents of 1 A and placed 1 m apart?

    <p>2 x 10<sup>-7</sup> N/m</p> Signup and view all the answers

    What is the relationship between magnetic field, dipole moment, and torque?

    <p>τ = m → x B →</p> Signup and view all the answers

    Inside a bar magnet, the magnetic lines of force

    <p>are from N-pole to S-pole of the magnet</p> Signup and view all the answers

    The direction of induced current is determined by

    <p>Lenz's law</p> Signup and view all the answers

    Wb/m2 is the unit of

    <p>magnetic field</p> Signup and view all the answers

    In an LCR circuit, energy dissipation occurs in

    <p>R only</p> Signup and view all the answers

    If the peak value of alternating current is I0, what is its root mean square value?

    <p><em>I<sub>0</sub></em>/√2</p> Signup and view all the answers

    Which form of radiation is used for photography in fog?

    <p>Infrared ray</p> Signup and view all the answers

    What is the requirement for candidates when answering questions in the examination?

    <p>Answer in their own words as far as practicable</p> Signup and view all the answers

    The energy in an electromagnetic wave is

    <p>Equally divided between electric and magnetic field</p> Signup and view all the answers

    What should candidates do with their Answer Booklet before leaving the examination hall?

    <p>Hand it over to the Invigilator compulsorily</p> Signup and view all the answers

    What can candidates do with the Question Booklet after the examination is complete?

    <p>Take it away with them</p> Signup and view all the answers

    Which of the following describes the maximum word limit for answering each question?

    <p>250 words</p> Signup and view all the answers

    What is the scoring system for the multiple-choice questions?

    <p>1 mark for each correct answer with no negative marking</p> Signup and view all the answers

    What should candidates do if they need to illustrate their answers?

    <p>Draw neat and clear diagrams wherever necessary</p> Signup and view all the answers

    What is the purpose of candidates answering in their own words?

    <p>To ensure originality</p> Signup and view all the answers

    Which of the following is NOT a requirement for answering questions?

    <p>Using bullet points wherever possible</p> Signup and view all the answers

    How many multiple choice questions are to be answered?

    <p>25</p> Signup and view all the answers

    What happens if a candidate fails to return their Answer Booklet?

    <p>They face disciplinary action</p> Signup and view all the answers

    Which type of mirror forms a virtual image larger than the object?

    <p>Concave mirror</p> Signup and view all the answers

    What happens to the value of the refractive index with an increase in wavelength?

    <p>Decreases</p> Signup and view all the answers

    Who proposed the concept of secondary wavelets?

    <p>Huygens</p> Signup and view all the answers

    What shape do the interference fringes take in Young's double slit experiment?

    <p>Straight line</p> Signup and view all the answers

    What is the formula for the energy of a photon?

    <p><em>h</em>ν</p> Signup and view all the answers

    What does the coefficient of mutual induction depend on in two long coaxial solenoids?

    <p>The number of turns in each solenoid and their separation</p> Signup and view all the answers

    What is the ratio of de Broglie wavelength associated with two electrons accelerated through 25 V and 36 V?

    <p>5/6</p> Signup and view all the answers

    Which component does NOT contribute to the impedance in an L-C-R series circuit?

    <p>Transformer</p> Signup and view all the answers

    What causes the scattering of alpha particles in Rutherford's experiment?

    <p>Coulomb force</p> Signup and view all the answers

    What is the formula for the energy of an orbital electron in a hydrogen atom according to Bohr's principle?

    <p>$E = -\frac{Z^2<em>e^4</em>m}{8*\epsilon_0^2<em>h^2</em>n^2}$</p> Signup and view all the answers

    What happens to the atomic mass of a radioactive atom that emits a β-particle?

    <p>Remains unchanged</p> Signup and view all the answers

    In the half-wave rectifier circuit with a p-n junction diode, what is the outcome of a negative input voltage?

    <p>Diode blocks current</p> Signup and view all the answers

    What type of impurity is found in a p-type semiconductor?

    <p>Valency of three</p> Signup and view all the answers

    Which of the following correctly distinguishes conductors from insulators based on energy band diagrams?

    <p>Conductors have overlapping valence and conduction bands</p> Signup and view all the answers

    For which material is the width of the forbidden band maximum?

    <p>Non-conductors</p> Signup and view all the answers

    What does Gauss's law in electrostatics state regarding electric field lines?

    <p>Electric field lines are straight and radial from the source charge</p> Signup and view all the answers

    Which condition describes the balance in a Wheatstone bridge according to Kirchhoff's rules?

    <p>Total voltage across the bridge is zero</p> Signup and view all the answers

    What is a key feature of a moving coil galvanometer that helps improve its sensitivity?

    <p>Using a stronger magnetic field</p> Signup and view all the answers

    When forming the final image of a compound microscope at the least distance of distinct vision, what is the distance typically considered?

    <p>25 cm</p> Signup and view all the answers

    Study Notes

    Jharkhand Academic Council Intermediate Examination

    • The 2024 annual Intermediate Examination for Physics is scheduled to be 3 hours and 15 minutes long.
    • Students must answer in the Answer Booklet, which will be provided separately.
    • The examination is divided into two parts:
      • Part A: Multiple Choice Questions (MCQs) - 25 marks
      • Part B: Subjective Questions - 45 marks
    • Part A has 25 MCQs, each worth 1 mark. There are four options (A, B, C, and D).
    • Part B is further divided into three sections:
      • Section A: Very Short Answer Type Questions (7 questions - 1 mark each, maximum one sentence answers)
      • Section B: Short Answer Type Questions (6 questions - 3 marks each, maximum 150 words answers)
      • Section C: Long Answer Type Questions (4 questions - 5 marks each, maximum 250 words answers)
    • Students are advised to answer using their own words whenever possible, draw clear diagrams where needed, and return the Answer Booklet to the Invigilator before leaving the examination hall.
    • Students may take the Question Booklet with them after the examination.

    Multiple Choice Questions

    • Question 1: If two charged spheres separated by a distance d exert a force F on each other, doubling both charges and their separation distance will result in a force of 4F.
    • Question 2: The smallest observed charge is 1.6 x 10-19 C.
    • Question 3: The dielectric constant for a metal is infinite.
    • Question 4: The capacitance of a parallel plate capacitor depends on the area of the plate.
    • Question 5: Interchanging the battery and galvanometer in a Wheatstone bridge does not affect the galvanometer's deflection.
    • Question 6: The ratio of specific resistances for two copper wires of lengths l and 2l with radii r and 2r respectively is 1:1.
    • Question 7: Two long parallel wires carrying a current of 1 A each in the same direction, separated by 1 meter, experience an attractive force of 2 x 10-7 N/m.
    • Question 8: The relation between magnetic field (B → ), dipole moment (m → ), and torque (τ) is τ = m → x B → .
    • Question 9: Magnetic lines of force inside a bar magnet go from the South pole to the North pole.
    • Question 10: Lenz's law and Fleming's right-hand rule determine the direction of induced current.
    • Question 11: Wb/m2 is the unit for magnetic field.
    • Question 12: Energy dissipation in an LCR circuit occurs primarily in the resistor (R).
    • Question 13: The root mean square value of an alternating current (AC) with a peak value of I0 is I0/√2.
    • Question 14: Infrared rays are used for photography in fog.
    • Question 15: The energy in an electromagnetic wave is equally divided between the electric and magnetic fields.
    • Question 16: A virtual image larger than the object is formed by a concave mirror.
    • Question 17: The refractive index decreases with an increase in wavelength.
    • Question 18: Christiaan Huygens proposed the concept of secondary wavelets.
    • Question 19: The interference fringes formed in Young's double-slit experiment are hyperbolic.
    • Question 20: The energy of a photon is hν.
    • Question 21: The ratio of de Broglie wavelengths for two electrons accelerated through 25 V and 36 V is 6/5.
    • Question 22: Coulomb force causes the scattering of alpha particles in Rutherford's experiment.
    • Question 23: When a radioactive atom emits a β-particle, its atomic mass remains unchanged.
    • Question 24: p-type semiconductors contain impurities with a valency of three.
    • Question 25: Non-conductors have the maximum width of the forbidden band.

    Subjective Questions

    Section A

    • The questions in Section A are very short answer questions.
    • Each question is worth 1 mark and should be answered in one sentence.
    • Students must answer any seven questions from this section.

    Section B

    • Section B consists of short answer questions.
    • Each question is worth 3 marks, and students must write a maximum of 150 words for each answer.
    • Students must answer any six questions from this section.

    Section C

    • Section C consists of long answer questions.
    • Each question is worth 5 marks, and students must write a maximum of 250 words for each answer.
    • Students must answer any four questions from this section.

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    JAC Physics Annual Intermediate Examination 2024 PDF

    Description

    Prepare for the Jharkhand Academic Council's 2024 Intermediate Examination in Physics. The exam consists of multiple-choice questions and subjective types, covering various aspects of the subject. Familiarize yourself with the exam structure and question types to maximize your performance.

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