1
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
$12 \mathrm{~ms}^{-1}$
2
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
3
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
4
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The power of a thin convex lens placed in air is +4 D . The refractive index of the material of the convex lens is $\frac{3}{2}$. If this convex lens is immersed in a liquid of refractive index $\frac{5}{3}$, then
A
it behaves like a convex lens of focal length 75 cm .
B
it behaves like a convex lens of focal length 125 cm .
C
it behaves like a concave lens of focal length 125 cm .
D
it behaves like a concave lens of focal length 75 cm .
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