Which of the following statements is false?
2 answers:
A & B
Observe the path of the light ray as it passes through the lenses as shown in the attached images. Concave lenses diverge light rays while the convex lens converges the light rays.
Explanation:
Real images are formed where the rays converge, a property of images by convex lenses. Convex lenses can be used to magnify objects. If the image occurs before the focal point of the lens then the image will be upright but smaller. The images inverts and gets bigger past the focal point.
Virtual images are property of concave lenses. These images appear closer but smaller than the real object.
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Explanation:
The given data is as follows.
Mass of the ornament () = 0.9 kg
Length of the wire (l) = 1.5 m
Mass of missile () = 0.4 kg
Initial speed of missile () = 12 m/s
r = 1.5 m
According to the law of conservation of momentum,
Putting the given values into the above formula as follows.
0 + 4.8 = 1.3v
v = 3.69 m/s
Now, the centrifugal force produced is calculated as follows.
=
= 11.80 N
Hence, tension in the wire is calculated as follows.
T =
=
= 24.54 N
Thus, we can conclude that tension in the wire immediately after the collision is 24.54 N.