Yes. looking at a plane's wing 'end on' - the upper surface curves, while the lower surface is straight. This causes the air flowing over the upper surface to travel further than the lower surface - which creates lift.
It is not possible in plane Euclidean geometry, but always true on a convex curved surface such as the face of the Earth.
No. In a convex polygon the sum of the interior angles is (n-2)*180 deg where n is the number of interior angles. In a non-convex polygon this is not necessarily true.
TRUE
False. A convex lens will produce a smaller, upright, and virtual image if the object is placed inside the focal point.
The upper meniscus of the acid hematin is considered when taking a reading because it represents the true volume of the sample. The meniscus is the curve at the surface of a liquid caused by surface tension, and in this case, the upper meniscus accounts for any excess liquid or bubbles that may be present on the surface.
False. Rays reflected from a convex mirror do not always converge. In the case of a convex mirror, the reflection causes the rays to diverge away from each other.
A convex lens can converge a beam of parallel rays to a point on the other side of the lens. It is useful for reflecting and transmitting light.
true
360 degrees (this is true with any convex polygon)
No, an image formed by a convex mirror is always virtual and upright. Concave mirrors can form both real and inverted images.
A convex lens acts as concave lens when it is kept in a medium whose optical density is higher than the lens itself. And the vice-verse is also true .i.e, a concave lens can act as convex lens too .
True. The water table is the level below the Earth's surface that is saturated with water and represents the upper surface of the groundwater in an area. It is mostly found underground and fluctuates depending on factors such as precipitation and seasonality.