a concave mirror forms a real image 4 times as tall as the object placed 10 cm in front of mirror. find the position of image and radius of curvature..

v=-40cm and R=-16cm

Explanation:

Use m=-v/u

u get v=-40cm

then use mirror formula to get the focal length=-8cm

thus R=-16cm

mark my answer as the BRAINLIEST

their crystal patterns have been disrupted by stress

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.