question_answer1) Distinguish
between a photon and quantum.
question_answer2) What
type of metals are used in photoelectric cells? Give one example.
question_answer3) What
will happen to the mass of electron if it travels with velocity of light?
question_answer4) In
summer, we are advised not to wear black clothes. Assign reason.
question_answer5) Can
a moving cricket ball have a wave character?
question_answer6) What
is the significance of de Broglie relationship?
question_answer9) When
is the energy of electron regarded as zero?
question_answer10) What
is the difference between the notations \[l\] and L?
question_answer11) Out
of 3d and 4s orbitals, which is filled first?
question_answer12) Why
can 2p sub-shell accommodate more electrons than 2s sub-shell?
question_answer17) We
do not see a car moving as a wave on the road. Explain.
question_answer21) Give two examples from everyday
life where cathode ray tubes are used.
question_answer22) What is the difference in the
origin of cathode rays and anode rays?
question_answer25) What is the difference between
atomic mass and mass number?
question_answer30) What is the difference between a
quantum and a photon?
question_answer32) Why are Bohr's orbits called
stationary states?
question_answer33) What is the difference between
ground state and excited state?
question_answer35) What do you mean by saying that
energy of the electron is quantized?
question_answer36) Why the number of lines observed
in the hydrogen spectrum is very large?
question_answer40) What experimental support is
available for de Broglie's equation?
question_answer45) Why the ball hit with a hockey by
a player does not make a wave?
question_answer55) How many electrons are present
in all subshells (fully-filled) with \[n+l=5\]?
question_answer56) What is the angular momentum of an electron in (i) 2 s orbital (ii) 4 f orbital?
question_answer57) What is the difference between
the notations \[l\] and L?
question_answer61) Why Pauli exclusion principle is
called exclusion principle?
question_answer64) Discuss the similarities and
differences between a 1s and a 2s orbital.
question_answer65) How many radial/spherical nodes
will be present in the \[5f\]orbital?
question_answer69) Why Hund's rule is called rule
of maximum multiplicity?
question_answer70) How many electrons is sulphur (Z = 16) can have \[n+l=3\]?
question_answer77) Which of the two is paramagnetic: V (IV) or V (V) and why?
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