KTGHard
Question
A student performs an experiment to determine the Young′s modulus of a wire, exactly 2 m long, by Searle′s method. In a particular reading, the student measures the extension in the length of the wire to be 0.8 mm with an uncertainty of ± 0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ±0.01 mm. Take g = 9.8 m/s2 (exact). The Young′s modulus obtained from the reading is
Options
A.(2 .0 ± 0.3) × 1011 N/m2
B.(2 .0 ± 0.2) × 1011 N/m2
C.(2 .0 ± 0.1) × 1011 N/m2
D.(2 .0 ± 0.5) × 1011 N/m2
= 0.1125More KTG Questions
The critical temperature of CO2 is -...A certain gas is taken to the five states represented by dots in the graph. The plotted lines are isotherms. Order of th...In figure, P-V curve of an ideal gas is given. During the process, the cumulative work done by the gas...Air is filled at 60o C in a vessel of open mouth. The vessel in heated to a temperature T so that 1/4th part of air esca...The average molecular kinetic energy of any gas taken over long time interval is :-...