What does “Photoelectric effect” actually mean in Modern Physics, and why does it matter for NEET?
light ejects electrons from a metal only if its frequency exceeds a threshold, regardless of intensity.
In simple words: light ejects electrons from a metal only if its frequency exceeds a threshold, regardless of intensity. Getting Photoelectric effect clear matters because NEET questions on Modern Physics usually test this idea directly, not just a formula you memorised.
Key point
Photoelectric effect
Common mistake
thinking very bright low-frequency light can eject electrons.
Memory tip
frequency decides IF electrons come out; intensity only decides HOW MANY.
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