1
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A pipe with 30 cm length is open at both ends. Which harmonic mode of the pipe resonates with the 1.65 kHz source? (Velocity of sound in air $=330 \mathrm{~ms}^{-1}$ )
A
2
B
3
C
3.5
D
2.5
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
An object is placed at a distance of 18 cm in front of a mirror. If the image is formed at a distance of 4 cm on the other side, then focal length, nature of the mirror and nature of image are respectively
A
3.14 cm , concave mirror and real image
B
3.14 cm , convex mirror and real image
C
5.14 cm , convex mirror and virtual image
D
5.14 cm , concave mirror and virtual image
3
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If a microscope is placed in air, the minimum separation of two objects seen as distinct is $6 \mu \mathrm{~m}$. If the same is placed in a medium of refractive index 1.5, then the minimum separation of the two objects to see as distinct is
A
$4 \mu \mathrm{~m}$
B
$6 \mu \mathrm{~m}$
C
$3 \mu \mathrm{~m}$
D
$9 \mu \mathrm{~m}$
4
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Three point charges $+q,+2 q$ and $+4 q$ are placed along a straight line such that the charge $+2 q$ lies at equidistant from the other two charges. The ratio of the net electrostatic force on charges $+q$ and $+4 q$ is
A
$1: 1$
B
$1: 2$
C
$1: 4$
D
$1: 3$
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