1
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A capacitor and a resistor of resistance $100 \sqrt{3} \Omega$ are connected in series to an AC source of voltage $100 \sin (200 t) \mathrm{V}$, where ' $t$ ' is time in second. If the phase difference between the voltage and the current in the circuit is $30^{\circ}$, then the capacitance of the capacitor is

A

$30 \mu \mathrm{~F}$

B

$50 \mu \mathrm{~F}$

C

$100 \mu \mathrm{~F}$

D

$150 \mu \mathrm{~F}$

2
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The amplitude of the electric field associated with a light beam of intensity $\frac{15}{\pi} \mathrm{Wm}^{-2}$ is

A

$120 \mathrm{NC}^{-1}$

B

$15 \mathrm{NC}^{-1}$

C

$60 \mathrm{NC}^{-1}$

D

$30 \mathrm{NC}^{-1}$

3
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When photons incident on a photosensitive material of work function 1.5 eV , the maximum velocity of the emitted photoelectrons is $8 \times 10^5 \mathrm{~ms}^{-1}$. The stopping potential of the photoelectrons is

(Mass of the electron $=9 \times 10^{-31} \mathrm{~kg}$ and charge of the electron $=1.6 \times 10^{-19} \mathrm{C}$ )

A

1.8 V

B

1.5 V

C

2.1 V

D

2.4 V

4
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The potential energy of an electron in an orbit of hydrogen atom is -6.8 eV . The de-Broglie wavelength of the electron in this orbit is

( $r_o$ is Bohr radius)

A

$2 \pi r_0$

B

$4 \pi r_0$

C

$\pi r_0$

D

$3 \pi r_0$

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