1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A circular loop of wire of radius 14 cm is placed in magnetic field directed perpendicular to the plane of the loop. If the field decreases at a steady rate of $$0.05 \mathrm{~Ts}^{-1}$$ in some interval, then the magnitude of the emf induced in the loop is

A
2.08 mV
B
3.08 mV
C
2.16 mV
D
3.24 mV
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

An $$R-L-C$$ circuit consists of a $$150 \Omega$$ resistor, $$20 \mu \mathrm{F}$$ capacitor and a 500 mH inductor connected in series with a 100 V AC supply. The angular frequency of the supply voltage is $$400 \mathrm{rad} \mathrm{s}^{-1}$$. The phase angle between current and the applied voltage is

A
$$\tan ^{-1}(0.8)$$
B
$$\tan ^{-1}(0.25)$$
C
$$\tan ^{-1}(0.6)$$
D
$$\tan ^{-1}(0.5)$$
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic field in a plane electromagnetic wave is given as $$\mathbf{B}=\left(3 \times 10^{-7} \mathrm{~T}\right) \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{j}$$

The electric field of this wave is given as

A
$$90 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{i} \mathrm{~Vm}^{-1}$$
B
$$90 \sin \left(3 \times 10^4 \mathrm{x}+9 \times 10^{12} t\right) \hat{\mathrm{k}} \mathrm{~Vm}^{-1}$$
C
$$45 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{i} \mathrm{~Vm}^{-1}$$
D
$$45 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{k} \mathrm{~Vm}^{-1}$$
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment the slits are 3 mm apart and are illuminated by light of two wavelengths $$3750 \mathop A\limits^o$$ and $$7500 \mathop A\limits^o$$. The screen is placed at 4 m from the slits. The minimum distance from the common central bright fringe on the screen at which the bright fringe of one interference pattern due to one wavelength coincide with the bright fringe of the other is

A
2 mm
B
3 mm
C
1 mm
D
8 mm
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