1
TG EAPCET 2024 (Online) 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two closed pipes when sounded simultaneously in their fundamental modes produce 6 beats per second. If the length of the shorter pipe is 150 cm , then the length of the longer pipe is

(Speed of sound in air $=336 \mathrm{~ms}^{-1}$ )

A
$168{ }^{\circ} \mathrm{cm}$
B
184 cm
C
176 cm
D
192 cm
2
TG EAPCET 2024 (Online) 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
An object placed at a distance of 24 cm from a concave mirror forms an image at a distance of 12 cm from the mirror. If the object is moved with a speed of $12 \mathrm{~ms}^{-1}$, then the speed of the image is
A
$24 \mathrm{~ms}^{-1}$
B
$3 \mathrm{~ms}^{-1}$
C
$6 \mathrm{~ms}^{-1}$
D
$12 \mathrm{~ms}^{-1}$
3
TG EAPCET 2024 (Online) 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
When the object and the screen are 90 cm apart, it is observed that a clear image is formed on the screen when a convex lens is placed at two positions separated by 30 cm between the object and the screen. The focal length of the lens is
A
21.4 cm
B
20 cm
C
30 cm
D
30.8 cm
4
TG EAPCET 2024 (Online) 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
When a monochromatic light is incident on a surface separating two media, both the reflected and refracted lights have the same
A
frequency
B
wavelength
C
velocity
D
amplitude
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