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

In an ideal step up transformer, if the input voltage and input power are $V_1$ and $R_1$ respectively and the output voltage and output power are $V_2$ and $P_2$ respectively, then

A
$V_1=V_2 ; P_1=P_2$
B
$V_1>V_2 ; P_1>P_2$
C
$V_1
D
$V_1
2
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.
3
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
4
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
$1: 8$
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