Question 5: An electron and proton are accelerated from rest through the same potential difference. Which particle has the longer wavelength? Explain. ANSWER We know…
Question 6: All objects radiate energy. Explain why, then, are we not able to see objects in a dark room? Objects kept in the dark…
Question 7: If photoelectric effect is observed for some metal can you conclude that the effect will also be observed for another metal under the…
Question 8: Explain why it is impossible for a particle with rest mass to move faster than the speed of light. ANSWER According to special…
Question 9: Use photon model to explain why ultraviolet is harmful to your skin while visible light is not? ANSWER The harmfulness of radiation depends…
Question 10: Why the annihilation of an electron and positron creates a pair of photons a d not a single photon? ANSWER When a particle…
Question 12: Explain why we can experimentally observe the wave-like properties of electron but not of a billiard ball? ANSWER de’ Broglie wavelength associated with…
Question No Question Question 1 Imagine a world in which c = 50 m/s. How would the everyday events appear to us?See Answer Question 2…
Question 13: Does a light bulb at a temperature of 2500 K produce as white light as the sun at 6000 K? Explain. ANSWER No,…
Question 14: A beam of red light and a beam of blue light have exactly the same energy. Which light contains the greater number of…