Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Units and Measurements question

2018 · 15 Apr · Shift 1 · Q65
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Units and Measurements
  5. /2018 · 15 Apr · Shift 1 · Q65

Units and Measurements question

2018 · 15 Apr · Shift 1 · Q65

JEE MainPhysicsUnits and MeasurementsMCQ+4 / −1
The relative error in the determination of the surface area of sphere is α\alphaα. Then the relative error in the determination of its volume is :
  1. A
    32α{3 \over 2}\alpha23​α
  2. B
    23α{2 \over 3}\alpha32​α
  3. C
    52α{5 \over 2}\alpha25​α
  4. D
    α\alphaα
PreviousNext

More from Units and Measurements

  • The characteristic distance at which quantum gravitational effects are significant, the Planck length, can be determined from a suitable combination of the fundamental physical constants G, h and c. Which of the following correctly gives…2018 · MCQ
  • The relative uncertainly in the period of a satellite orbiting around the earth is 10-2. If the relative uncertainty in the radius of the orbit is negligible, the relative uncertainty in the mass of the earth is :2018 · MCQ
  • The percentage errors in quantities P, Q, R and S are 0.5%, 1%, 3% and 1.5% respectively in the measurement of a physical quantity A = R​SP3Q2​. The maximum percentage error in the value of A will be :2018 · MCQ
  • The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error in determining the…2018 · MCQ
  • Time (T), velocity (C) and angular momentum (h) are chosen as fundamentalquantities instead of mass, length and time. In terms of these, the dimensions of mass would be :2017 · MCQ
  • A physical quantity P is described by the relation P = a 21​ b2 c3 d − 4 If the relative errors in the measurement of a, b, c and d respectively, are 2%, 1%, 3% and 5%, then the relative error in P will be :2017 · MCQ
  • The following observations were taken for determining surface tension T of water by capillary method: diameter of capillary, D = 1.25 × 10-2 m rise of water, h = 1.45 × 10-2m Using g = 9.80 m/s2 and the simplified relation T…2017 · MCQ
  • In the following ‘I’ refers to current and other symbols have their usual meaning. Choose the option that corresponds to the dimensions of electrical conductivity :2016 · MCQ