MHT CET 2024 16th May Evening Shift | Dual Nature of Radiation Question 2 | Physics

The figure shows the variation of photocurrent with anode potential for four different radiations. Let $\mathrm{I}_{\mathrm{a}}, \mathrm{I}_{\mathrm{b}}, \mathrm{I}_{\mathrm{c}}$ and $\mathrm{I}_{\mathrm{d}}$ be the intensities for the curves $a, b, c$ and $d$ respectively $\left[f_a, f_b, f_c\right.$ and $f_d$ are frequencies respectively]

MHT CET 2024 16th May Morning Shift Physics - Dual Nature of Radiation Question 1 English

$\mathrm{f}_{\mathrm{a}}=\mathrm{f}_{\mathrm{b}}>\mathrm{f}_{\mathrm{c}}>\mathrm{f}_{\mathrm{d}}$ and $\mathrm{I}_{\mathrm{a}}=\mathrm{I}_{\mathrm{b}}>\mathrm{I}_{\mathrm{c}}>\mathrm{I}_{\mathrm{d}}$

$\mathrm{f}_{\mathrm{a}}<\mathrm{f}_{\mathrm{b}}>\mathrm{f}_{\mathrm{c}}=\mathrm{f}_{\mathrm{d}}$ and $\mathrm{I}_{\mathrm{a}}=\mathrm{I}_{\mathrm{b}}>\mathrm{I}_{\mathrm{c}}>\mathrm{I}_{\mathrm{d}}$

$\mathrm{f}_{\mathrm{a}}=\mathrm{f}_{\mathrm{b}}=\mathrm{f}_{\mathrm{c}}=\mathrm{f}_{\mathrm{d}}$ and $\mathrm{I}_{\mathrm{a}}<\mathrm{I}_{\mathrm{b}}<\mathrm{I}_{\mathrm{c}}<\mathrm{I}_{\mathrm{d}}$

$\mathrm{f}_{\mathrm{a}}>\mathrm{f}_{\mathrm{b}}>\mathrm{f}_{\mathrm{c}}>\mathrm{f}_{\mathrm{d}}$ and $\mathrm{I}_{\mathrm{a}}=\mathrm{I}_{\mathrm{b}}=\mathrm{I}_{\mathrm{c}}=\mathrm{I}_{\mathrm{d}}$

MHT CET 2024 15th May Evening Shift

MCQ (Single Correct Answer)

-0

When a certain metallic surface is illuminated with monochromatic light wavelength $\lambda$, the stopping potential for photoelectric current is $4 \mathrm{~V}_0$. When the same surface is illuminated with light of wavelength $3 \lambda$, the stopping potential is $\mathrm{V}_0$. The threshold wavelength for this surface for photoelectric effect is

$\quad 9 \lambda$

$\frac{\lambda}{9}$

$3 \lambda$

$\frac{\lambda}{3}$

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