1
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The frequency of fifth harmonic of a closed organ pipe is equal to the frequency of third harmonic of an open organ pipe. If the length of the open pipe is 72 cm , then length of the closed organ pipe is
A
60 cm
B
45 cm
C
30 cm
D
75 cm
2
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
When a convex lens is immersed in two different liquids of refractive indices 1.25 and 1.5 , the ratio of the focal lengths of the lens is $5: 16$. The refractive index of the material of the lens is
A
1.55
B
1.5
C
1.65
D
1.6
3
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Two light waves of intensities $I$ and $2 I$ superimpose on each other. If the path difference between the light waves reaching a point is $12.5 \%$ of the wavelength of the light, then the resultant intensity at the point, is (Both the light waves have same wavelength)
A
1
B
91
C
31
D
51
4
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A particle of mass 0.5 g and charge $10 \mu \mathrm{C}$ is subjected to a uniform electric field of $8 \mathrm{NC}^{-1}$. If the particle is initially at rest, the velocity of the particle after a time of 5 s is
A
$5 \mathrm{~ms}^{-1}$
B
$0.5 \mathrm{~ms}^{-1}$
C
$8 \mathrm{~ms}^{-1}$
D
$0.8 \mathrm{~ms}^{-1}$
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