1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A light of intensity $$12 \mathrm{Wm}^{-2}$$ incidents on a black surface of area $$4 \mathrm{~cm}^2$$. The radiation pressure on the surface is

A
$$1 \times 10^{-8} \mathrm{~Pa}$$
B
$$4 \times 10^{-8} \mathrm{~Pa}$$
C
$$1.6 \times 10^{-7} \mathrm{~Pa}$$
D
$$4.8 \times 10^{-7} \mathrm{~Pa}$$
2
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The electric field $$(E)$$ and magnetic field $$(B)$$ of an electromagnetic wave passing through vacuum are given by

\begin{aligned} & E=E_0 \sin (k x-\omega t) \\ & B=B_0 \sin (k x-\omega t) \end{aligned}

Then the correct statement among the following is

A
$$E_0 k=B_0 \omega$$
B
$$E_0 \omega=B_0 k$$
C
$$E_0 B_0=\omega k$$
D
$$E_0 B_0=\frac{\omega}{k}$$
3
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A carrier wave is used to transmit a message signal. If the peak voltage of modulating signal and carrier signal are increased by $$1 \%$$ and $$3 \%$$ respectively, the modulation index is changed by

A
$$-2\%$$
B
$$4\%$$
C
$$2\%$$
D
$$-4\%$$
4
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A plane electromagnetic wave travels in free space along $$Z$$-axis. At a particular point in space, the electric field along $$X$$-axis is $$8.7 \mathrm{~Vm}^{-1}$$. The magnetic field along $$Y$$-axis is

A
$$2.9 \times 10^{-8} \mathrm{~T}$$
B
$$3 \times 10^{-6} \mathrm{~T}$$
C
$$8.7 \times 10^{-6} \mathrm{~T}$$
D
$$3 \times 10^{-5} \mathrm{~T}$$
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