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The Special Theory of Relativity (Ch 10) Questions And Answers 100% Correct Latest Update 2025
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The Special Theory of Relativity (Ch 10) Questions And Answers 100% Correct Latest Update 2025
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The Special Theory of Relativity (Ch 10) QuestionsAnd Answers 100% Correct Latest Update 2025
What is Galilean relativity? - ANSWER the laws of physics are the same in all
inertial frames of reference; how motion is compared between inertial frames
How is the speed of light measured? - ANSWER light speed remains the same
Suppose you're in a spaceship in space with no light and you're not accelerating,
only moving with uniform velocity. Is there a way to determine whether you are
moving or standing still? - ANSWER With no reference point to consider, there
is no way to tell whether you're moving or standing still
So, if you are in a spaceship in space, how can you determine relative velocity? -
ANSWER If you see another spaceship then you both will be able to determine
your relative velocities
What does Einstein's special theory of relativity state? - ANSWER every non-
accelerated observer observes the same laws of nature; in other words, no
experiments performed within a sealed room moving at an unchanged speed and
direction can tell whether you are at rest or moving
What does Einstein's special theory of relativity state for the speed of light? -
ANSWER the speed of light (and any other electromagnetic radiation) in empty
space is the same for all non-accelerated observers, regardless of the motion of
the light source or the motion of the observer
, How do we know that light goes the same speed for all observers? - ANSWER
in a 1964 experiment, a subatomic particle moving at nearly lightspeed emitted
electromagnetic radiation both forward and backward. Galilean relativity predicts
that forward-moving radiation should go faster than c while the backward-moving
radiation move slower than c; measurement showed both moved with exactly the
same speed as c
What was the idea that everything was moving with respect to a material medium
before Einstein's Special theory of Relativity? - ANSWER everything was
moving with respect to a material medium called Ether; EM radiations are waves
in Ether
Who performed experiments to prove the existence of Ether? - ANSWER
Michelson and Morley, but their experiments showed that there was no Ether
In respect to Ether, what did Einstein's special theory of relativity show? -
ANSWER we don't need any Ether to explain electromagnetic wave
propagation
What are EM waves vibrations of? - ANSWER Electromagnetic fields, and they
don't need any material medium to propagate
Is there any absolute motion? - ANSWER there is no absolute motion, all
inertial (non-accelerating) reference frames are equivalent
What is Einstein's thoughts about time? - ANSWER time is physical, it is part of
the physical universe
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