1

JEE Advanced 2021 Paper 2 Online

MCQ (More than One Correct Answer)

+4

-2

A heavy nucleus N, at rest, undergoes fission N $$\to$$ P + Q, where P and Q are two lighter nuclei. Let $$\delta$$ = M

_{N}$$-$$ M_{P}$$-$$ M_{Q}, where M_{P}, M_{Q}and M_{N}are the masses of P, Q and N, respectively. E_{P}and E_{Q}are the kinetic energies of P and Q, respectively. The speeds of P and Q are v_{P}and v_{Q}, respectively. If c is the speed of light, which of the following statement(s) is(are) correct?2

JEE Advanced 2021 Paper 1 Online

MCQ (More than One Correct Answer)

+4

-2

Which of the following statement(s) is(are) correct about the spectrum of the hydrogen atom?

3

JEE Advanced 2020 Paper 2 Offline

MCQ (More than One Correct Answer)

+4

-2

In an X-ray tube, electrons emitted from a filament (cathode) carrying current I hit a target (anode) at a distance d from the cathode. The target is kept at a potential V higher than the cathode resulting in emission of continuous and characteristic X-rays. If the filament current I is decreased to $${1 \over 2}$$, the potential difference V is increased to 2V, and the separation distance d is reduced to $${d \over 2}$$, then

4

JEE Advanced 2020 Paper 1 Offline

MCQ (More than One Correct Answer)

+4

-2

A particle of mass m moves in circular orbits with potential energy V(r) = Fr, where F is a positive
constant and r is its distance from the origin. Its energies are calculated using the Bohr model. If the
radius of the particle’s orbit is denoted by R and its speed and energy are denoted by v and E,
respectively, then for the n

^{th}orbit (here h is the Planck’s constant)Questions Asked from Atoms and Nuclei (MCQ (Multiple Correct Answer))

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