1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The correct statement among the following is

A
Electromagnetic waves cannot travel in vacuum
B
Electromagnetic waves are longitudinal waves
C
Electromagnetic waves are produced by charges moving with uniform velocity
D
Electromagnetic waves carry both energy and momentum as they propagate through space.
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The additional energy that should be given to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is

A
four times initial energy
B
thrice the initial energy
C
equal to the initial energy
D
twice the initial energy
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The ratio of the energies of the electron in the hydrogen atom in the first and second excited states is
A
$9: 4$
B
$4: 1$
C
$8: 1$
D
$1: 8$
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In the following nuclear reaction $X$ is

$$ { }_{13} \mathrm{Al}^{27}+{ }_2 \mathrm{He}^4 \longrightarrow{ }_0 n^1+X $$

A
${ }_{15} \mathrm{P}^{31}$
B
${ }_{14} \mathrm{Si}^{30}$
C
${ }_{15} \mathrm{P}^{30}$
D
${ }_{15} \mathrm{Si}^{31}$
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