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Q3: If the energy levels are given as
Q8: The Madelung constant is given by
Q10: An object 0.50 cm high is 5.0
Q20: A concave-convex lens of flint glass has
Q39: The speed of a conduction electron whose
Q45: The graphs show <span class="ql-formula"
Q47: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6081/.jpg" alt=" A negative lens
Q103: The lifetime of a typical excited atomic
Q104: Two slits of width a =
Q153: In Young's experiment,<br>A) each slit acts as