The duration of a laser pulse is `10^(-8)` s. The uncertainly in its energy will be

An atom has a mass of 0.02kg and uncertainty in its velocity is 9.218xx10^(-0)m//s then uncertainly in position is (h=6.626xx10^(-34)Js)

An atom has a mass of 0.02kg and uncertainty in its velocity is 9.218xx10^(-0)m//s then uncertainly in position is (h=6.626xx10^(-34)Js)

For an electron whose positional uncertainly is 1.0xx10^(-10)m , the uncertainty in the component of the velocity in ms^(-1) will be

For an electron whose positional uncertainly is 1.0xx10^(-10)m , the uncertainty in the component of the velocity in ms^(-1) will be

A laser used to weld detached retains emits light with a wavelength 652 nm in pulses that are of 20ms duration. The average power during each pulse is 0.6W. The energy in each pulse and in a single photon are