Modern Physics True and False

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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


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