What is the fundamental postulate of the Special Theory of Relativity?
a) The speed of light is constant in all inertial frames of reference
b) Time and space are absolute
c) Gravity affects all objects equally
d) The mass of an object never changes
Which scientist proposed the Special Theory of Relativity?
a) Isaac Newton
b) Albert Einstein
c) Niels Bohr
d) James Clerk Maxwell
What happens to time as an object moves close to the speed of light?
a) Time speeds up
b) Time slows down
c) Time remains unchanged
d) Time reverses
What is length contraction in Special Relativity?
a) An object appears longer when moving at high speeds
b) An object appears shorter along the direction of motion
c) An object’s width increases with speed
d) Length remains constant regardless of speed
Which of the following statements is true in Special Relativity?
a) The laws of physics depend on the observer’s frame of reference
b) The speed of light depends on the motion of the observer
c) Time and space are relative to the observer’s motion
d) Objects moving faster than light experience time normally
What is the famous equation derived from Special Relativity?
a) F = ma
b) E = mc²
c) P = mv
d) V = IR
Which of the following is an example of relativistic mass increase?
a) A stationary ball gaining mass
b) An object’s mass increasing as it moves closer to the speed of light
c) The mass of an object remains constant
d) Mass decreases as speed increases
What happens to the simultaneity of two events in Special Relativity?
a) Events appear simultaneous to all observers
b) Different observers may disagree on simultaneity
c) Simultaneity is absolute
d) Time always flows the same way for all observers
Which quantity remains constant in all frames of reference?
a) Speed of light
b) Time interval
c) Mass of a moving object
d) Length of an object
What is time dilation?
a) Time speeds up as velocity increases
b) Time slows down for an observer in motion relative to another
c) Time remains constant regardless of speed
d) Time reverses when exceeding the speed of light
Which of the following best explains the twin paradox?
a) The twin who stays on Earth ages slower than the twin who travels
b) The twin who travels at high speed ages slower than the twin on Earth
c) Both twins age at the same rate
d) Time flows normally regardless of speed
What happens when an object moves at the speed of light?
a) Its mass becomes zero
b) Its length becomes infinite
c) Its energy becomes infinite
d) Its velocity decreases
The relativistic energy equation includes:
a) Potential energy
b) Rest energy and kinetic energy
c) Only kinetic energy
d) Gravitational energy
What is the Lorentz factor used for?
a) Measuring temperature changes
b) Correcting relativistic effects on time and length
c) Calculating gravitational force
d) Measuring electrical resistance
Which of the following changes according to an observer in motion?
a) The laws of physics
b) The speed of light
c) Time and length
d) The charge of an electron
What is the velocity addition formula used for in relativity?
a) To determine absolute motion
b) To combine velocities in a relativistic framework
c) To measure acceleration
d) To find gravitational force
Which experimental result supports Special Relativity?
a) The Michelson-Morley experiment
b) Rutherford’s gold foil experiment
c) The double-slit experiment
d) Millikan’s oil-drop experiment
What happens to the energy of a moving object in Special Relativity?
a) It decreases with speed
b) It remains constant
c) It increases with speed
d) It is independent of speed
Why can’t objects reach the speed of light?
a) Because they lose energy
b) Because time speeds up
c) Because their mass would become infinite
d) Because length contraction stops motion
Which of the following remains unchanged under Lorentz transformation?
a) Time interval
b) Speed of light
c) Length of an object
d) Mass of a moving object
Which principle does Special Relativity exclude?
a) The relativity of simultaneity
b) The constancy of the speed of light
c) The equivalence principle of gravity
d) The transformation of energy and mass
What effect does Special Relativity have on GPS satellites?
a) No effect at all
b) Causes time to run faster in space than on Earth
c) Causes time to run slower in space than on Earth
d) Increases the satellite’s weight
Which of the following increases as an object approaches light speed?
a) Its charge
b) Its rest mass
c) Its relativistic mass
d) Its electrical resistance
If an astronaut travels near the speed of light and returns to Earth, what will they experience?
a) No time difference
b) They will have aged more than people on Earth
c) They will have aged less than people on Earth
d) They will have aged at the same rate as those on Earth
