JEE Advanced Physics: Modern Physics Practice Questions

12 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

Q1.
$Which of the following particles has the largest de Broglie wavelength if all are moving with the same velocity?$
Easy
Q2.
$According to the Bohr model of the hydrogen atom, the angular momentum of an electron in the nth orbit is given by which expression?$
Easy
Q3.
$In a photoelectric effect experiment, the stopping potential depends on which of the following factors?$
Easy
Q4.
$T h e d e B r o g l i e w a v e l e n g t h o f an e l ec t r o nm o v in g w i t ha v e l oc i t y o f 1 0^{6} m e t er s p er seco n d i s a pp r o x ima t e l y e q u a l t o w hi c h o f t h e f o l l o w in g v a l u es ? (G i v e n : ma ss$
Easy
Q5.
$W ha t i s t h ee n er g y o f a p h o t o n w i t ha f r e q u e n cy o f 5 x 1 0^{1} 4 H z ? (G i v e n : P l an c k co n s t an t = 6.63 x 1 0^{-} 34 J s)$
Easy
Q6.
$A radioactive sample has a half-life of 20 days. What fraction of the original sample will remain after 100 days?$
Medium
Q7.
$A hydrogen-like atom has a ground state binding energy of 122.4 eV. Find the wavelength of the photon emitted when the electron transitions from the n = 2 state$
Medium
Q8.
$In a photoelectric experiment, the stopping potential for a metal surface is 2.0 V when light of wavelength 300 nm is used. What is the work function of the met$
Medium
Q9.
$An electron is accelerated through a potential difference of 100 V. What is its de Broglie wavelength?$
Medium
Q10.
$In a Compton scattering experiment, an X-ray photon of wavelength 0.05 nm is scattered at an angle of 90 degrees. What is the change in wavelength of the photon$
Medium
Q11.
$In a photoelectric experiment, light of frequency nu is incident on a metal surface with work function phi. If the stopping potential is V, and the frequency is$
Hard
Q12.
$In a Compton scattering experiment, an X-ray photon of wavelength lambda strikes a stationary electron. If the photon is scattered at an angle of 90 degrees, wh$
Hard

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