Special Relativity
Physics ⇒ Modern Physics
Special Relativity starts at 11 and continues till grade 12.
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See sample questions for grade 11
Define an inertial frame of reference.
Describe the twin paradox in special relativity.
Explain the concept of simultaneity in special relativity.
Explain why nothing can travel faster than the speed of light according to special relativity.
A muon has a mean lifetime of 2.2 μs at rest. If it moves at 0.995c, what is its mean lifetime as measured by a stationary observer? (γ ≈ 10)
A spaceship travels at 0.5c. If its rest mass is 1000 kg, what is its relativistic mass? (m = m0 / √(1 - v²/c²))
A spaceship travels at 0.8c relative to Earth. If 10 years pass on Earth, how much time passes on the spaceship? (Use the time dilation formula: t' = t / γ, where γ = 1 / √(1 - v²/c²))
If a clock on a spaceship moving at 0.6c measures 1 hour, how much time passes on Earth? (γ = 1.25)
Which equation represents the relationship between energy and mass in special relativity?
(1) E = mc2
(2) E = 1/2 mv2
(3) F = ma
(4) p = mv
Which experiment provided evidence for the constancy of the speed of light?
(1) Michelson-Morley experiment
(2) Rutherford gold foil experiment
(3) Young’s double-slit experiment
(4) Millikan oil drop experiment
Which of the following best describes the relativity of simultaneity?
(1) All observers agree on the order of events.
(2) Simultaneous events in one frame may not be simultaneous in another.
(3) Time is absolute.
(4) Space is absolute.
Which of the following is a consequence of special relativity?
(1) Mass increases with speed
(2) Energy is not conserved
(3) The speed of light is variable
(4) Space and time are absolute
Length contraction occurs in the direction ______ to the motion of the object.
The equation E = mc2 shows that mass and ______ are equivalent.
The phenomenon where moving objects appear shorter in the direction of motion is called ______.
The speed of light in vacuum is approximately ______ m/s.
True or False: According to special relativity, massless particles must travel at the speed of light.
True or False: According to special relativity, no object with mass can reach the speed of light.
True or False: Special relativity applies only to objects moving at speeds close to the speed of light.
True or False: The concept of absolute rest exists in special relativity.
