NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
VISIT NOW

WB JEE

Dual Nature of Radiation

Physics

Previous Years Questions

MCQ (More than One Correct Answer)

More
Electric field component of an EM radiation varies with time as E = a (cos$$\omega$$0t + sin$$\omega$$t cos$$\omega$$0t)...
WB JEE 2021
A point source of light is used in an experiment of photoelectric effects. If the distance between the source and the ph...
WB JEE 2020
Electrons are emitted with kinetic energy T from a metal plate by an irradiation of light of intensity J and frequency v...
WB JEE 2019

MCQ (Single Correct Answer)

More
For nuclei with mass number close to 119 and 238, the binding energies per nucleon are approximately 7.6 MeV and 8.6 MeV...
WB JEE 2020
A nucleus X emits a $$\beta $$-particle to produce a nucleus Y. If their atomic masses are Mx and My respectively, then ...
WB JEE 2020
A parent nucleus X undergoes $$\alpha$$-decay with a half-life of 75000 yrs. The daughter nucleus Y undergoes $$\beta$$-...
WB JEE 2019
When light of frequency v1 is incident on a metal with work function W (where hv1 > W), then photocurrent falls to ze...
WB JEE 2017

Joint Entrance Examination

JEE Main JEE Advanced WB JEE

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Medical

NEET

CBSE

Class 12