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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2020

PhysicsEasysingle choice

Let $n_{r}$ and $n_{b}$ be respectively the number of photons emitted by a red bulb and a blue bulb of equal power in a given time

Options:

Answer:

Solution:

$P_{R e d} = P_{B l u e}$

$n_{r} \frac{h c}{λ_{r}} = n_{b} \frac{h c}{λ_{b}}$

$\frac{n_{r}}{n_{b}} = \frac{λ_{r}}{λ_{b}}$

As $λ_{r} > λ_{b}$

$∴$ $n_{r} > n_{b}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2020

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