The angle at which a projectile must be fired to cover maximum range is
30°
45°
60°
90°
Which of the following does NOT describe the image of a plane mirror
Erect
Laterally inverted
Same distance from mirror as object
Magnified
The inverse of the time taken for a wave to complete one full cycle is called
wavelength
period
frequency
amplitude
The following types of waves are all transverse except
Light waves
Radio waves
Surfaces waves on water
Sound waves
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