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20 questions
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- Q11. Which scientist is credited with first proposing that light is made of tiny particles called corpuscles?Niels BohrAlbert EinsteinMax PlanckIsaac Newton30sSC9.E.1
- Q22. What phenomenon demonstrates the wave-like nature of light?Interference patternsThe emission of photonsThe photoelectric effectLight beams passing through each other30s
- Q33. In the context of light, what are quanta?Discrete packets of energyThe tiny fraction of the light spectrum visible to humansSolid particles proposed by NewtonWavelengths of light30s
- Q44. Which of these is NOT a characteristic of light waves?FrequencyMassWavelengthEnergy30s
- Q55. What is the primary distinction between different types of light?Their speedTheir energy levelTheir wavelengthTheir colour30s
- Q66. What is the term for the dual nature of light, exhibiting both wave and particle properties?Quantum entanglementWave theoryCorpuscular theoryWave-particle duality30s
- Q77. Who proposed that light, which was known to be a wave, is actually a stream of photons?Niels BohrLouis de BroglieAlbert EinsteinIsaac Newton30s
- Q88. If light did not exhibit wave-like properties, which of the following would NOT be observed?Refraction of lightAbsorption of lightReflection of lightInterference patterns30s
- Q99. If light were only a particle, what would be impossible?For a beam of light to reflect from a surfaceFor light to travel in a straight lineFor light beams to pass through each other without interactingFor light to transfer energy in discrete packets30s
- Q1010. According to the sources, which of the following best describes the relationship between wavelength and energy?Shorter wavelengths have higher energyWavelength is not related to energyOnly visible light has an energy that corresponds to the wavelengthShorter wavelengths have lower energy30s
- Q1111. If a light source emits higher frequency waves, what would be true about the energy of those waves?The energy would depend on the colour of the lightThe energy would not changeThe energy would be lowerThe energy would be higher.30s
- Q1212. How does the understanding of wave-particle duality explain the colours of light emitted by hot objects?It shows that objects emit light in a continuous spectrumIt demonstrates the way objects emit light depends on the speed of lightIt shows that the objects absorb light in a continuous spectrumIt demonstrates that objects emit light in discrete chunks depending on the frequency of the light30s
- Q1313. How did Rutherford's experiment with alpha particles contribute to the understanding of light?It proved that light can pass through objectsIt helped in understanding the structure of the atom which allowed for further studies of light emission and absorptionIt showed that light has a specific wavelengthIt proved that light is made of corpuscles30s
- Q1414. What was Bohr's contribution to the understanding of atomic structure and light emission?He showed that atoms emit light in a continuous spectrumHe observed electrons bouncing backwardsHe proposed that electrons in specific orbits don't emit light, and emit light only when changing orbits.He demonstrated the wavelike nature of electrons.30s
- Q1515. If an electron absorbs energy it may be expected to do which of the following?Spiral into the nucleusChange orbitEmit X-raysEmit light30s