[ DOST 8 ] DOST SCHOLARSHIP EXAM REVIEWER VIII

DOST Scholarship Reviewer

Instructions:

Please answer each question to the best of your ability. Each question is multiple choice, and only one answer per question is correct. Select the most appropriate answer from the options provided. There are 20 questions in total.

When you have completed all questions, click the "Submit" button at the bottom of the page to see your score. Good luck!

In Einstein's theory of general relativity, what is a key prediction regarding the nature of spacetime near a massive object?

A) Spacetime remains flat and unaltered by mass.
B) Spacetime curves in response to the presence of mass.
C) Spacetime expands exponentially near massive objects.
D) Spacetime contracts and forms a singularity in all cases.

Which of the following phenomena can only be explained by quantum mechanics?

A) Quantum tunneling.
B) Newtonian mechanics.
C) Conservation of momentum.
D) Kepler’s laws of planetary motion.

The Casimir effect is observed when:

A) A particle reaches near-light speeds.
B) Black holes emit radiation.
C) Two particles annihilate each other.
D) Two uncharged, parallel plates experience an attractive force due to quantum vacuum fluctuations.

Which of the following particles are considered to be massless according to the Standard Model of particle physics?

A) Photons.
B) Electrons.
C) Neutrons.
D) Protons.

In quantum field theory, which force is mediated by the exchange of gluons?

A) Electromagnetic force.
B) Strong nuclear force.
C) Weak nuclear force.
D) Gravitational force.

Which of the following correctly describes quantum entanglement?

A) A phenomenon in which particles collide and annihilate.
B) The rapid decay of particles into photons.
C) A form of quantum teleportation.
D) A condition where two particles remain connected and instantly affect each other, regardless of distance.

Which of the following properties can change during a relativistic collision?

A) The total mass of the system.
B) The total energy of the system.
C) The velocity of light.
D) The total momentum of the system.

The concept of a blackbody in physics refers to an object that:

A) Absorbs all incident electromagnetic radiation, regardless of wavelength.
B) Emits light only at a specific wavelength.
C) Reflects all electromagnetic waves.
D) Is impervious to any form of radiation.

Which of the following forces acts on a charged particle moving through a magnetic field?

A) Lorentz force.
B) Gravitational force.
C) Electrostatic force.
D) Weak nuclear force.

In quantum mechanics, what does the term “wave function collapse” refer to?

A) The loss of energy in a photon.
B) The transition of a quantum system from a superposition of states to a single, definite state.
C) The moment when an atom splits into two.
D) The destruction of a particle’s quantum state due to interaction with antimatter.

What is the primary characteristic of a Bose-Einstein condensate?

A) Particles occupy the same quantum state and behave as a single quantum entity.
B) Particles accelerate faster than the speed of light.
C) Particles display strong repulsion from each other.
D) Particles exhibit an infinite amount of energy.

The phenomenon of gravitational lensing is caused by:

A) Light being absorbed by dark matter.
B) Light bending as it passes near a massive object, due to spacetime curvature.
C) The interference of light waves from multiple stars.
D) The deflection of light caused by magnetic fields in space.

Which of the following particles is known for violating parity symmetry in weak interactions?

A) Proton.
B) Neutrino.
C) Photon.
D) Electron.

In string theory, the different particles observed in the universe are thought to be the result of:

A) Vibrations of tiny strings at different frequencies.
B) The spin of particles interacting with dark energy.
C) Particles colliding with dark matter.
D) Quantum interference of subatomic forces.

Which quantum number determines the orientation of an electron's orbit in space?

A) Principal quantum number.
B) Spin quantum number.
C) Magnetic quantum number.
D) Azimuthal quantum number.

What is the significance of the Higgs boson in the Standard Model of particle physics?

A) It explains the origin of dark matter.
B) It is responsible for the electromagnetic force.
C) It is responsible for giving mass to particles.
D) It causes the acceleration of particles to light speed.

Which of the following best describes a supernova?

A) The collapse of a white dwarf into a black hole.
B) The explosion of a star after it has exhausted its nuclear fuel.
C) The expansion of a neutron star into a galaxy.
D) The fusion of hydrogen atoms in a protostar.

In quantum mechanics, Heisenberg's uncertainty principle implies that:

A) Particles can be at two places at once.
B) It is impossible to simultaneously know both the exact position and momentum of a particle.
C) Particles must move faster than the speed of light.
D) Particles create energy from vacuum fluctuations.

Which force holds atomic nuclei together?

A) Strong nuclear force.
B) Electromagnetic force.
C) Weak nuclear force.
D) Gravitational force.

What is Hawking radiation?

A) Radiation emitted by stars just before they collapse.
B) Radiation that black holes are theorized to emit due to quantum effects near the event horizon.
C) Radiation caused by a supernova explosion.
D) Radiation generated by the collision of galaxies.

Result

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