Matter and Quantum Mechanics

The "God particle" (Higgs boson) is the particle that gives mass to fundamental particles through the Higgs field. Without this mechanism, particles would have no mass and the universe as we know it wouldn't exist. The Large Hadron Collider at CERN was built specifically to detect this particle. It does not give energy, weight, or life.

The mean free path is the average distance a particle (such as a molecule or atom) travels between successive collisions with other particles. This concept is important in the kinetic theory of gases and helps explain properties like viscosity and thermal conductivity.

Neutrinos are elementary particles with extremely small but non-zero mass and no electric charge. Option A incorrectly states zero mass, while Option C incorrectly describes them as positively charged. Neutrinos are neutral particles with tiny mass, making Option B correct despite the typo in 'neutral'.

The mean free path is the average distance a molecule or atom travels between successive collisions with other particles. This concept is fundamental in kinetic theory of gases and helps explain properties like viscosity, thermal conductivity, and diffusion rates.

Electromagnetic waves do NOT need matter to propagate - they can travel through vacuum (option B is True). This is a key property that distinguishes them from mechanical waves like sound. They propagate through oscillating electric and magnetic fields.

Like all matter, granite is composed of atoms. Atoms consist of a tiny, dense nucleus surrounded by a relatively vast cloud of electrons. Because the nucleus is so small compared to the overall size of the atom, the atom (and thus the granite) is mostly empty space.

Max Planck is credited as the founder of quantum theory through his work on black body radiation in 1900, introducing the concept of quantized energy. Herschel is known for discovering infrared radiation, while 'Ganleo' appears to be a nonsensical distractor. Planck's quantum hypothesis revolutionized physics by proposing that energy is emitted in discrete packets called quanta.

Atoms are mostly empty space because the nucleus is tiny compared to the overall size of the atom, with electrons occupying the vast empty space around it. Since granite is made of atoms, and atoms are mostly empty space, granite is too.

Ampere (2) discovered the relationship between electricity and magnetism. Foucault (3) measured the velocity of light. Hertz (4) discovered radio waves. Neils Bohr (1) proposed the atomic structure. Option C correctly matches a-2, b-3, c-4, d-1.

Neutrinos are electrically neutral particles, as their name suggests ('little neutral one'). They have no electric charge, which allows them to pass through matter almost unaffected. They are not positive, negative, or variably charged.

The positron is the antiparticle of the electron. It has the same mass as an electron but opposite (positive) charge. Positrons are emitted in beta-plus decay and were one of the first antiparticles discovered.

Einstein's 1905 doctoral dissertation was 'A New Determination of Molecular Dimensions,' using viscosity data to calculate Avogadro's number - squarely in molecular statistics. Relativity came from his 1905 papers, not his thesis. Nuclear fission was discovered later.

Einstein eliminated the luminiferous ether concept through his 1905 special relativity paper. The ether was hypothesized as the medium through which light waves propagated, but Einstein showed that electromagnetic waves could travel through a vacuum without any medium, making the ether concept unnecessary. This was a revolutionary departure from classical physics.

This is a duplicate of question 91787. Einstein eliminated the luminiferous ether concept through his 1905 special relativity paper. The ether was hypothesized as the medium through which light waves propagated, but Einstein showed that electromagnetic waves could travel through a vacuum without any medium, making the ether concept unnecessary.