1
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is 270 nT , the amplitude of the electric field part of the wave is
A
$90 \mathrm{NC}^{-1}$
B
$81 \mathrm{NC}^{-1}$
C
$9 \mathrm{NC}^{-1}$
D
$30 \mathrm{NC}^{-1}$
2
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If Planck's constant is $6.63 \times 10^{-34} \mathrm{Js}$, then the slope of a graph drawn between cut-off voltage and frequency of incident light in a photoelectric experiment is
A
$414 \times 10^{-15}$ Vs
B
$19.776 \times 10^{-15} \mathrm{Vs}$
C
$2.198 \times 10^{-15} \mathrm{Vs}$
D
$1.337 \times 10^{-15}$ Vs
3
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
At room temperature, gaseous hydrogen is bombarded with a beam of electrons of 13.6 eV energy. The series to which the emitted spectral line belongs to
A
Lyman series
B
Balmer series
C
Paschen series
D
Ptund series
4
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The half-life of a radioactive substance is 12 min . The time gap between $28 \%$ decay and $82 \%$ decay of the radioactive substance is
A
6 min
B
18 min
C
12 min
D
24 min
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