FIITJEE Physics Quiz - Radioactive Decay
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Questions and Answers

What is the initial number of nuclei of B?

  • N0 (correct)
  • 2N0
  • 4N0
  • 3N0

    • In which direction is the electric field E directed?

  • Vertically up (correct)
  • Horizontally to the right
  • Downwards
  • Inside the plane of the paper

    • What is the angle at which the bob is released at rest?

  • 60⁰ (correct)
  • 45⁰
  • 90⁰
  • 30⁰

    • What is the direction of the magnetic field B?

    <p>Directed inside the plane of the paper</p> Signup and view all the answers

    At time t = t0, what happens to the number of nuclei of B?

    <p>Stop changing</p> Signup and view all the answers

    What is the pivot point of the light string?

    <p>Point O</p> Signup and view all the answers

    What is the maximum height attained by the hollow sphere?

    <p>v2 / g</p> Signup and view all the answers

    What is the time taken to reach the maximum height for the ring?

    <p>2v / g sin θ</p> Signup and view all the answers

    What is the maximum height attained by the solid sphere?

    <p>7v 2 / 10g</p> Signup and view all the answers

    What is the time taken to reach the maximum height for the disc?

    <p>3v / 2g sin θ</p> Signup and view all the answers

    Which object attains a maximum height of 3v 2 / 4g?

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

    What is the maximum height attained by the object with the angle of incline θ?

    <p>2v sin θ / g</p> Signup and view all the answers

    What occurs when the total mechanical energy is maximum?

    <p>The combination is (III)(iv)(P)</p> Signup and view all the answers

    Where does the maximum friction act between the body and the incline?

    <p>The combination is (III)(iv)(S)</p> Signup and view all the answers

    What is the direction of the magnetic field in the square frame of wire?

    <p>Perpendicular to the frame</p> Signup and view all the answers

    What is the value of 'n' in the equation for the charge on the capacitor?

    <p>3</p> Signup and view all the answers

    What is the radius of curvature of the concave mirror?

    <p>0.5 m</p> Signup and view all the answers

    What is the height of the point light source above the set-up?

    <p>0.3 m</p> Signup and view all the answers

    What is the acceleration of the electron due to the electric field?

    <p>eE/m</p> Signup and view all the answers

    What is the velocity component of the electron parallel to the plates?

    <p>v0</p> Signup and view all the answers

    What is the angular deviation of the electron from its initial direction of motion?

    <p>tan^-1(vy/v0)</p> Signup and view all the answers

    What is the time taken by the electron to cross the electric field?

    <p>l/v0</p> Signup and view all the answers

    What is the pitch of the helical path of the electron?

    <p>2eBV/πm</p> Signup and view all the answers

    What is the value of the pitch of the helical path of the electron in millimeters?

    <p>9 mm</p> Signup and view all the answers

    Which of the following statements about the compound HO OH H OH H CH2OH OH H is true?

    <p>It can reduce Tollen's reagent</p> Signup and view all the answers

    What is the result of treating oxime of compound Cl with H2SO4/Δ?

    <p>A compound P, which on hydrolysis produces Q and R</p> Signup and view all the answers

    What is true about R?

    <p>It gives brisk effervescence of CO2 with aqueous NaHCO3</p> Signup and view all the answers

    What is Q?

    <p>An aliphatic primary amine</p> Signup and view all the answers

    What happens when Q is subjected to Hofmann exhaustive methylation?

    <p>It produces a compound that has very high solubility in water</p> Signup and view all the answers

    What is the result of reacting Q with CHCl3/NaOH?

    <p>It produces a foul-smelling compound</p> Signup and view all the answers

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