A microscope using suitable photons is employed to locate an electron in an atom within a distance of `1A^@` What is the uncertainty involved in the measurement of its velocity?

If uncertainties in the measurement of position and momentum of an electron are found to be equal in magnitude, then what is the uncertainty in the measurement of velocity? Comment on the result.

If one electron has a velocity of 500m*s^(-1) with an uncertainty of 0.02%. What is the uncertainty in locating location?

If an electron is travelling with uncertainty in velocity of 1 m/s, what is the theoretical uncertainty in its position?

A proton is accelerated to a velocity of one tenth times that of the velocity of light. If the uncertainty in the determination of its velocity be +-0.5% , calculate the uncertainty in locating its position. [mass of proton =1.675xx10^(-27)kg ].

Average kinetic energy of the atom of Hg vapour is 1000 cal*mol^(-1) . What will be the value of its rms velocity?

In an exerperiment, the measured velocity of an electron is 50m*s^(-1) . If this measurement of velocity involves 99.999% accuracy, find the uncertainty in the determination of its position.

If a 1 g body is travelling along the x-axis with an uncertainty in velocity of 1 cm/s, what is theoretical uncertainty in its position?

What force is required to generate a velocity of 36 km cdot h^(-1) in a body of mass 500 g. within a distance of 2 m?

A short bar magnet of magnetic moment 5.25xx10^(-2)J.T^(-1) is placed with its axis perpendicular to the earth's magnetic field . At what distance from the centre of the magnet , the magnet , the resultant field is inclined at 45^(@) with the earth's field on its axis Ignore the length of the magnet in comparison to the distance involved .

When ultraviolet rays of wavelength 620 Å is incident on a hydrogen atom in the ground state, its electron is emitted with a velocity of 1.5 xx10^(6) m *s^(-1) . What is the ionisation energy of hydrogen ? Given , h= 6.625xx10^(-34)J *s , mass of electron = 9.1 xx 10^(-31)kg, c=3xx 10^(8)m*s^(-1) and 1 eV=1.6xx 10^(-19)J .