Modern Physics True and False
Time is absolute and universal
False
Netonian mechanics are valid in inertial and noninertial frames of reference
False
The probability cloud on an electron in orbits is similar to the curcular path of a planet's orbit
False
The spee dof light is an absolute velocity in Newtonian mechanics
False
The wave particle duality explains that light cannot be a wave or a particle.
False
A blackbody cannot emit ultraviolet radiation
False
At high temperatures, a black body will emit electrons
False
If heater past ultraviolet radiation, black bodies will emit X rays
False
In Rutherford's gold foil experiment, alpha particles must hit a nucleys to be deflected
False
In the photoelectric effect, the brighter the light, the fast the ejected electrons will move.
False
Light energy can be emitted in a continus spectrum
False
Light will travel at a faster speed when emitted from a forward moving object
False
The deflection of alpha particles was uniform after they left the gold foil
False
The energy levels of hydrogen are distributed evenly with the interval distances becoming smaller
False
The mass of an object will get heavier at speed of light
False
Two events that are simultaneous in one frame of reference are simultaneous in a second frame moving relative to the first
False
When an object approaches the speed of light, the object will stretch out in length but dimensions other than the direction of travel will remain the same.
False
An inertial frame of reference is one in which an object has no net force acting on it.
True
As an object is heated, it will produce all colours of the light spectrum
True
At the speed of light, the moving object's time will slow down to zero
True
Atoms can only be excited by absorbing a photon of energy or by a high speed electron
True
Electrically excited gases will only give off light in discrete spectrum lines
True
Energy is emitted by a constant times a multiple of the minimum frequency
True
Heisenberg's uncertainty principle states that we cannot know both the position and the momentum of a particle at the same time
True
In the photoelectric effect, as the colour of light goes from red to blue, the ejected electrons move faster.
True
Matter waves indicate that all matter has a wave property
True
Newtonian mechanics apply equally in all inertial frames of reference.
True
Quanta are directly proportional to the frequency of light
True
Rest masses can be expressed as units of energy
True
The Campton effectt shows the momentum is conserved in a photoelectric effect
True
The total amount of energy of matter will change, increasing as the object approaches the speed of light
True
The work function is the amount of energy required to remove an electron by ligh in the photoelectric efect
True
When an electron moves from higher energy to a lower energy state, it releases a photon of light
True
