Question 1:
Who proposed the concept of "corpuscles" to explain the behavior of light?
Explanation: The correct answer is B) Isaac Newton. Isaac Newton proposed the concept of "corpuscles," which were small particles or "atoms" of light, to explain the behavior of light. Newton's corpuscular theory of light described light as a stream of particles that traveled in straight lines and exhibited reflection and refraction.
Question 2:
Who conducted the famous double-slit experiment to demonstrate the wave-like behavior of light?
Explanation: The correct answer is B) Thomas Young. Thomas Young conducted the famous double-slit experiment in 1801 to demonstrate the wave-like behavior of light. By passing light through two closely spaced slits, he observed an interference pattern, providing evidence that light exhibits wave-like characteristics.
Question 3:
Which scientist proposed that light consists of discrete packets of energy called "quanta"?
Explanation: The correct answer is B) Max Planck. Max Planck proposed that light consists of discrete packets of energy called "quanta" or "energy elements" in 1900. This idea laid the foundation for quantum theory and helped explain certain phenomena, such as the blackbody radiation spectrum.
Question 4:
Who introduced the concept of wave-particle duality for electrons?
Explanation: The correct answer is D) Louis de Broglie. In his doctoral thesis in 1924, Louis de Broglie proposed the concept of wave-particle duality for electrons. He suggested that matter particles, like electrons, can exhibit wave-like properties, similar to light waves. This idea was later confirmed by experimental observations.
Question 5:
Who formulated the famous uncertainty principle, which relates to the limitations of simultaneous measurement of certain pairs of physical properties?
Explanation: The correct answer is B) Werner Heisenberg. Werner Heisenberg formulated the famous uncertainty principle in 1927. The uncertainty principle states that there is a fundamental limit to the precision with which certain pairs of physical properties, such as position and momentum, can be simultaneously measured. This principle is a fundamental concept in quantum mechanics.