List of top Physics Questions on Accuracy, precision of instruments and errors in measurement asked in KEAM

A particle of mass 40 g executes simple harmonic motion with an amplitude of 2.0 cm. If the time period of oscillation is \( \frac{\pi}{20} \) s, the total mechanical energy of the system is:
The time period of revolution of a planet around the sun in an elliptical orbit of semi-major axis \( a \) is \( T \). Then:
The wavelength of the de Broglie wave (in meter) associated with a particle of mass \(m\) moving with \(\frac{1}{10}\) of the velocity of light is (h = Planck's constant, c = velocity of light):
The constancy of the binding energy per nucleon in medium-sized nuclei is due to:
In a radioactive decay, the fraction of the number of atoms left undecayed after time \( t \) is:
The energy required by the electron to cross the forbidden band for Germanium is:
If a freely falling body covers 80 m in the first 4 seconds, then in the next 4 seconds it covers a distance of:
If a body at rest undergoes one dimensional motion with constant acceleration, then the power delivered to it at a time \( t \) is proportional to:
If a body is taken above the surface of the Earth, it loses its weight by 20% at a height of \( h = \frac{\sqrt{5}}{2} R \), where \( R \) is the radius of the Earth, then:
For the flow of incompressible liquid through a pipe, the Venturi-meter is used to measure the:
If a ray of light passes through a medium, its frequency and wavelength are \( 4 \times 10^{14} \) Hz and 450 nm respectively. Then the refractive index of the medium is:
If the percentage errors in the measurements of mass, length and time are 1%, 2% and 3% respectively, then the maximum permissible error in the measurement of the acceleration of a particle is