Science & Technology

Who proposed the theory of relativity?

A Isaac Newton
B Albert Einstein
C Niels Bohr
D Max Planck —

The famous equation E = mcÂ² relates mass to?

A Momentum
B Energy
C Force
D Velocity —

Who discovered the electron?

A J.J. Thomson
B Ernest Rutherford
C Niels Bohr
D James Chadwick —

Who discovered the proton?

A J.J. Thomson
B Ernest Rutherford
C Niels Bohr
D James Chadwick —

Who discovered the neutron?

A J.J. Thomson
B Ernest Rutherford
C Niels Bohr
D James Chadwick —

Rutherford's gold foil experiment led to the discovery of the?

A Electron
B Atomic nucleus
C Neutron
D Photon —

Who proposed the atomic model with electrons in fixed energy levels/orbits?

A J.J. Thomson
B Rutherford
C Niels Bohr
D John Dalton —

Who is known as the father of quantum theory?

A Einstein
B Max Planck
C Niels Bohr
D Erwin SchrÃ¶dinger —

Which particle is considered the fundamental carrier of light energy in quantum physics?

A Electron
B Photon
C Neutron
D Proton —

Which subatomic particle carries a negative charge?

A Proton
B Neutron
C Electron
D Positron (positively charged) —

Which subatomic particle has no electric charge?

A Proton
B Neutron
C Electron
D Positron —

A semiconductor material commonly used in electronics is?

A Copper
B Silicon
C Iron
D Aluminum —

A diode is primarily used to?

A Amplify signals
B Allow current flow in only one direction
C Store charge
D Generate a magnetic field —

A transistor is primarily used for?

A Only illumination
B Amplification and switching of electronic signals
C Only storing charge
D Only generating heat —

Who is credited with inventing the transistor (1947, Bell Labs)?

A John Bardeen, Walter Brattain, and William Shockley
B Thomas Edison
C Nikola Tesla
D Alexander Graham Bell —

An Integrated Circuit (IC) is also commonly known as a?

A Diode
B Microchip/chip
C Transistor
D Resistor —

Who are regarded as pioneers of the Integrated Circuit?

A Jack Kilby and Robert Noyce
B Bill Gates
C Steve Jobs
D Alan Turing —

Radioactivity was first discovered by?

A Henri Becquerel
B Marie Curie
C Ernest Rutherford
D Albert Einstein —

Which husband-wife duo made significant contributions to radioactivity research and discovered polonium and radium?

A Pierre and Marie Curie
B Niels and Margrethe Bohr
C Albert and Mileva Einstein
D Enrico and Laura Fermi —

Which type of radioactive decay is the basis of carbon dating?

A Uranium decay
B Carbon-14 decay
C Plutonium decay
D Radium decay —

The "half-life" of a radioactive substance refers to?

A The time taken for half of the radioactive atoms in a sample to decay
B The total lifespan of the substance
C Double the decay time
D The time for full decay —

Which of the following is a unit used to measure radioactivity?

A Becquerel/Curie
B Ohm
C Newton
D Pascal —

LASER stands for?

A Light Amplification by Stimulated Emission of Radiation
B Long Amplified Signal Emission Radar
C Light And Sound Emission Ray
D Light Absorption Signal Emission Ray —

LED stands for?

A Light Emitting Diode
B Low Energy Device
C Light Enhancing Device
D Light Energy Diode —

The wavelength of visible light is typically measured in which very small unit?

A Nanometer (or angstrom)
B Kilometer
C Meter
D Centimeter —