ماڈرن فزکس کی تاریخ انیسویں صدی کے آخر تک فزکس کے بہت سارے مسائل کی وضاحت ہوچکی تھی ۔ روشنی، حرارت، توانایئ، الیکٹرومیگنٹزم وغیرہ کے…
S.No Questions Question 1 State Einstein’s postulates of Special Theory of Relativity. Discuss its results.See Answer Question 2 What are the main features of the…
Question 3: What are the main features of photoelectric effect? Discuss the failure of classical physics and success of photon concept in explaining the effect.…
Question 2: What are the main features of the thermal radiations from a black body? Discuss Plank’s quantum theory and its importance in Physics. ANSWER…
Question 1: State Einstein’s postulate of special theory of relativity. Discuss its results. ANSWER Postulates of Einstein’s Special Theory of Relativity Einstein put forward his…
Question 4: What is Compton Effect? Develop a mathematical relation for the Compton shift. ANSWER Compton Effect The phenomenon in which a high-energy photon like…
Question 5: Write note on pair production and annihilation of matter. ANSWER Pair Production It is the process in which energy is converted into two…
Question 6: What is de’ Broglie hypothesis? Describe an experiment to show that particle has wave characteristics. ANSWER De Broglie Hypothesis: De Broglie, in 1924,…
Question 7: What is meant by wave-particle duality? Explain. ANSWER Light exhibits the properties of interference and diffraction; so must have a wave nature! But…
Question 8: State and explain Heisenberg’s uncertainty principle. Justify the validity of this principle by a thought experiment. ANSWER Heisenberg’s Uncertainty Principle It is impossible…