question_answer1) Distinguish between a photon and quantum.
View Solution play_arrowquestion_answer2) What type of metals are used in photoelectric cells? Give one example.
View Solution play_arrowquestion_answer3) What will happen to the mass of electron if it travels with velocity of light?
View Solution play_arrowquestion_answer4) In summer, we are advised not to wear black clothes. Assign reason.
View Solution play_arrowquestion_answer5) Can a moving cricket ball have a wave character?
View Solution play_arrowquestion_answer6) What is the significance of de Broglie relationship?
View Solution play_arrowquestion_answer9) When is the energy of electron regarded as zero?
View Solution play_arrowquestion_answer10) What is the difference between the notations \[l\] and L?
View Solution play_arrowquestion_answer11) Out of 3d and 4s orbitals, which is filled first?
View Solution play_arrowquestion_answer12) Why can 2p sub-shell accommodate more electrons than 2s sub-shell?
View Solution play_arrowquestion_answer17) We do not see a car moving as a wave on the road. Explain.
View Solution play_arrowquestion_answer21) Give two examples from everyday life where cathode ray tubes are used.
View Solution play_arrowquestion_answer22) What is the difference in the origin of cathode rays and anode rays?
View Solution play_arrowquestion_answer25) What is the difference between atomic mass and mass number?
View Solution play_arrowquestion_answer30) What is the difference between a quantum and a photon?
View Solution play_arrowquestion_answer32) Why are Bohr's orbits called stationary states?
View Solution play_arrowquestion_answer33) What is the difference between ground state and excited state?
View Solution play_arrowquestion_answer35) What do you mean by saying that energy of the electron is quantized?
View Solution play_arrowquestion_answer36) Why the number of lines observed in the hydrogen spectrum is very large?
View Solution play_arrowquestion_answer40) What experimental support is available for de Broglie's equation?
View Solution play_arrowquestion_answer45) Why the ball hit with a hockey by a player does not make a wave?
View Solution play_arrowquestion_answer55) How many electrons are present in all subshells (fully-filled) with \[n+l=5\]?
View Solution play_arrowquestion_answer56) What is the angular momentum of an electron in (i) 2 s orbital (ii) 4 f orbital?
View Solution play_arrowquestion_answer57) What is the difference between the notations \[l\] and L?
View Solution play_arrowquestion_answer61) Why Pauli exclusion principle is called exclusion principle?
View Solution play_arrowquestion_answer64) Discuss the similarities and differences between a 1s and a 2s orbital.
View Solution play_arrowquestion_answer65) How many radial/spherical nodes will be present in the \[5f\]orbital?
View Solution play_arrowquestion_answer69) Why Hund's rule is called rule of maximum multiplicity?
View Solution play_arrowquestion_answer70) How many electrons is sulphur (Z = 16) can have \[n+l=3\]?
View Solution play_arrowquestion_answer77) Which of the two is paramagnetic: V (IV) or V (V) and why?
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