Physics Quiz: Gravity and Spring Systems
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Questions and Answers

What is the gravitational acceleration on the surface of the Earth?

  • GπR/ρ
  • GπRρ (correct)
  • GπR^2ρ
  • GπR^2/ρ
  • What is the approximate current in the circuit if the forward voltage drop for the diode is 0.5 V?

  • 3.4 mA (correct)
  • 3 mA
  • 2 mA
  • 2.5 mA
  • What is the force constant of the spring system shown in the figure?

  • k1 + k2
  • k1/k2 + 1
  • k2/k1 + 1
  • k1k2/(k1 + k2) (correct)
  • What is the power factor of a RC circuit if its frequency of AC signal is halved?

    <p>1/√5</p> Signup and view all the answers

    What is the angular speed of the cubical block after it hits the ridge at point O?

    <p>3v/(2a)</p> Signup and view all the answers

    What is the formula for critical velocity in a fluid flow?

    <p>vC = Nη/ρD</p> Signup and view all the answers

    Which of the following statements is true about the measurements of the pipe's length?

    <p>Both measurements are equally accurate but not equally precise</p> Signup and view all the answers

    What is the ratio of charges on the inner and outer surfaces of shell C?

    <p>-2/3</p> Signup and view all the answers

    What are the charges on S1 and S2 after they are connected by a conducting wire?

    <p>4.5 μC and -4.5 μC</p> Signup and view all the answers

    What is the net charge on the outer surface of shell C?

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

    What is the horizontal component of the initial velocity of the projected body?

    <p>8 m/s</p> Signup and view all the answers

    What is the direction of the initial velocity of the projected body?

    <p>tan⁻¹(6/8)</p> Signup and view all the answers

    What is the number of folds in the paper?

    <p>10</p> Signup and view all the answers

    How is the letter 'A' represented in the Matrix?

    <p>11, 23</p> Signup and view all the answers

    What is the set of numbers for the word 'BEE'?

    <p>12, 15, 33</p> Signup and view all the answers

    What is the code for 'DICK' in the given word code?

    <p>3579</p> Signup and view all the answers

    What is the code for 'PIC' in the given word code?

    <p>657</p> Signup and view all the answers

    What is the code for 'NIC' in the given word code?

    <p>507</p> Signup and view all the answers

    What is the time period of the particle executing SHM?

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

    How much heat is required to raise the temperature of 2 moles of an ideal gas from 30℃ to 35℃ at constant volume?

    <p>60 cal</p> Signup and view all the answers

    Which of the following has a mass closest in value to that of the positron?

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

    What is the angular acceleration of the body undergoing circular motion whose angle turned is given by θ = θ0 + θ1 t + θ2 t^2?

    <p>2θ2</p> Signup and view all the answers

    What can be asserted about a nucleus of 131I at time t = 0?

    <p>It has a 50% chance of decaying before t = 4 days</p> Signup and view all the answers

    What is the probability that a nucleus of 131I will decay before t = 4 days?

    <p>50%</p> Signup and view all the answers

    What is the rate of reaction when the concentration of X is 0.01M?

    <p>1.73 × 10^(-4) M/min</p> Signup and view all the answers

    What is the correct order of acidity of the positions (X), (Y), and (Z) in the given compound?

    <p>(X) &gt; (Z) &gt; (Y)</p> Signup and view all the answers

    What are the calculated magnetic moments (spin only value) for species [FeCl4]^(-), [Co(C2O4)3]^(-), and MnO4^(-) respectively?

    <p>4.90, 0, and 2.83 BM</p> Signup and view all the answers

    How many hydroxyl groups are present in pyrophosphoric acid?

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

    What is Z in the sequence of reactions involving benzene?

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

    What is the name of the reaction PCH3COOH + Cl2 → ClCH2COOH + HCl?

    <p>Hell-Volhard-Zelinsky reaction</p> Signup and view all the answers

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