Physics Basics Quiz

What is the uncertainty principle in quantum mechanics?

• The principle that states energy and momentum are conserved in all interactions

• The principle that states the exact position and exact momentum of an object can be known simultaneously

• The principle that states it is impossible to know both the exact position and exact momentum of a particle at the same time

• The principle that states all particles behave as both particles and waves simultaneously

What does E=mc^2 represent in special relativity?

• Energy equals mass times the speed of light squared

• Energy equals mass times the speed of light

• Energy equals momentum times the speed of light squared

• Energy equals mass divided by the speed of light squared

Which particle is responsible for giving mass to other particles?

• Electron

• Proton

• Neutron

• Higgs boson

What is the main idea behind string theory?

• The universe is made up of tiny strings that vibrate at different frequencies

• The universe is a flat, two-dimensional surface

• Particles are points that interact at a distance

• Gravity is the only force that acts at the quantum level

What is the event horizon of a black hole?

• The point at which the gravitational pull becomes so strong that not even light can escape

• The center of a black hole where all its mass is concentrated

• The outer boundary of a black hole visible to an observer

• The path a particle takes as it spirals into a black hole

What is the Big Bang theory?

• The theory that the universe is expanding at a constant rate

• The theory that the universe was created from a small, dense, and hot singularity about 13.8 billion years ago

• The theory that the universe is in a steady state and has always existed

• The theory that the universe is cyclic, with periods of expansion followed by contraction

What is the principle of superposition in quantum mechanics?

• The principle that particles can only exist in discrete energy levels

• The principle that particles can exist in multiple states simultaneously until observed

• The principle that the position of a particle can be determined with absolute certainty

• The principle that the speed of light is constant in all inertial frames

According to special relativity, what happens to time as you approach the speed of light?

• Time speeds up

• Time slows down

• Time remains constant

• Time reverses

Which of the following is a fundamental force in particle physics?

• Friction

• Gravity

• Magnetism

• Elasticity

What does the term "brane" refer to in string theory?

• A type of string that vibrates at the lowest frequency

• A hypothetical one-dimensional line

• A multidimensional object on which strings can end or move freely

• The boundary of the universe in which strings exist