Which of the following is caused by careless handling?
Gross errors are mostly due to lack of knowledge, judgment and care on the part of experiment. That is Gross error is caused by careless handling.
1 fermi is equal to:
The fermi is a unit of measurement of length
The metric unit prefix femto means one quadrillionth, or one (1) with fourteen (14) nulls in front of it, i.e. 0.000,000,000,000,001 or 1×10-15. That makes one femtometer (and one fermi) equal to one quadrillionth of a meter.
Approximate ratio of 1 fermi to 1 angstrom is …
Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is
% error is volume=3×error in radius =3×1= 3%
The error in two readings of A are 0.01 and -0.03, then mean absolute error is?
Mean absolute error = (|0.01|+|-0.03|)/2
What is the number of significant figures in 0.310×103 ?
Number of significant figures are 3, because 103 is decimal multiplier.
Angstrom is the unit of
Angstrom (Å), unit of length used chiefly in measuring wavelengths of light, equal to 10−10 metre, or 0.1 nanometer.
Which is the most accurate atomic clock?
Cesium 133 is the element most commonly chosen for atomic clocks.
The method used to measure the distance of a planet from the earth is
The astronomers mainly use parallax method to find distances to objects like other planets. To calculate the distance to a star or to a planet, astronomers observe it from different places along Earth's orbit around the Sun.
The most suitable instrument for measuring the size of an atom is.
Only electron microscope has resolution of 0.5-0.6 Angstrom which is less than the size of an atom.