When an object is placed 10 cm in front of a convex lens, the image form is real, enlarged and inverted.
What is a possible value for the focal length of this convex lens?

A. 4cm
B. 8cm
C. 10cm
D. 12cm

The answer says B. 8cm but why?? please explain to me clearly

Consider a resistor with color code “orange blue brown gold” and a measured value of 370 ω. determine the following: nominal value, tolerance, % error, and the probability of another resistor from the same manufacturing batch having a value closer to nominal than this one. use matlab or excel to evaluate the erf function.

Which of the following would not be taken into consideration when describing the quality of a sound

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning