jee_main_2025_24_jan_evening - Dual Nature of Radiation and Matter Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #12 Photoelectric Effect
In photoelectric effect, the stopping potential (V₀) v/s frequency (u) curve is plotted. (h is the Planck's constant and φ₀ is work function of metal) (A) V₀ v/s u is linear (B) The slope of V₀ v/s u curve = φ₀h (C) h constant is related to the slope of V₀ v/s u line (D) The value of electric charge of electron is not required to determine h using the V₀ v/s u curve. (E) The work function can be estimated without knowing the value of h. Choose the correct answer from the options given below :
Start Practice →
QUESTION #17 Relativistic Mechanics
The energy E and momentum p of a moving body of mass m are related by some equation. Given that c represents the speed of light, identify the correct equation.
Start Practice →
QUESTION #23 Photon Theory of Light
The ratio of the power of a light source S₁ to that the light source S₂ is 2. S₁ is emitting 2 × 10¹⁵ photons per second at 600 nm. If the wavelength of the source S₂ is 300 nm, then the number of photons per second emitted by S₂ is ____ × 10¹⁴ .
Start Practice →
Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

Select Your Target Exam

Choose an exam track below to find formulas per chapter and patterns.

Syncing Exam Intelligence

Mapping formulas and patterns across all tracks…

PATH A — FULL LENGTH PRACTICE

Full Mock Test Hub

Simulate real NTA exam conditions with fully tracked mocks. Time yourself against past papers.

Now Live Open
PATH B — TARGETED PRACTICE

Topic-wise Practice Hub

Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.

Loading Questions... Browse Topics

Exam Analysis Tools

Chapter weightage trends and topic-wise practice — all mapped from past shift papers.

Year-wise PYQ

Chapter Weightage & Trends

See high-yield chapters, year-wise counts and the frequency-based chance each topic repeats next exam.

Weightage Board Open
Targeted PYQs

Topic-wise Practice Hub

Every past-year question for a chapter pulled from all papers, with its key formulas alongside.

One chapter at a time Open
Latest from the Blog
View all →

Loading articles...