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## Numerical

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In a photoemission experiment, the maximum kinetic energies of photoelectrons from metals P, Q and R are EP, EQ and ER, ...
JEE Advanced 2021 Paper 2 Online
A perfectly reflecting mirror of mass M mounted on a spring constitutes a spring-mass system of angular frequency $$\Ome... JEE Advanced 2019 Paper 2 Offline In a photoelectric experiment a parallel beam of monochromatic light with power of$$200W$$is incident on a perfec... JEE Advanced 2018 Paper 2 Offline The work functions of silver and sodium are 4.6 and 2.3 eV, respectively. The ratio of the slope of the stopping potenti... JEE Advanced 2013 Paper 1 Offline A silver sphere of radius 1 cm and work function 4.7 eV is suspended from an insulating thread in free-space. It is unde... IIT-JEE 2011 Paper 2 Offline The activity of a freshly prepared radioactive sample is 1010 disintegrations per second, whose mean life is 109 s. The ... IIT-JEE 2011 Paper 1 Offline An$$\alpha$$-particle and a proton are accelerated from the rest by a potential difference of 100 V. After this, their ... IIT-JEE 2010 Paper 1 Offline ## MCQ (More than One Correct Answer) More A heavy nucleus N, at rest, undergoes fission N$$\to$$P + Q, where P and Q are two lighter nuclei. Let$$\delta$$= MN... JEE Advanced 2021 Paper 2 Online Which of the following statement(s) is(are) correct about the spectrum of the hydrogen atom? JEE Advanced 2021 Paper 1 Offline Light of wavelength$$\lambda$$ph falls on a cathode plate inside a vacuum tube as shown in the figure. The work functio... JEE Advanced 2016 Paper 2 Offline For photo-electric effect with incident photon wavelength$$\lambda$$, the stopping potential is V0. Identify the correc... JEE Advanced 2015 Paper 1 Offline Using the expression$$2d\sin \theta = \lambda $$, one calculates the values of d by measuring the corresponding angles... JEE Advanced 2013 Paper 2 Offline ## MCQ (Single Correct Answer) More A photoelectric material having work-function$${\phi _0}$$is illuminated with light of wavelength$$\lambda \left( {\l...
JEE Advanced 2017 Paper 2 Offline
In a historical experiment to determine Planck's constant, a metal surface was irradiated with light of different wav...
JEE Advanced 2016 Paper 1 Offline
A metal surface is illuminated by light of two different wavelengths 248 nm and 310 nm. The maximum speeds of the photoe...
JEE Advanced 2014 Paper 2 Offline
A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the pulse is 30...
JEE Advanced 2013 Paper 1 Offline

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