When an object is 11 cm in front of a concave mirror, the image is 3.0 cm in front of the mirror. What is the focal length of the mirror in centimeters (cm)?

I’m not sure about this question

The independent variable in this experiment is the angle at which the light from the ray box strikes the mirror.hope this .

Answer: 1.4 seconds which is the third optionexplanation: current is defined as the flow of charge per timetherefore, the equation that relates current, charge and time can be expressed as follows: i = δq / δtwhere: i is the current given = 1.8 ampereδq is the charge given = 2.5 coulombδt is the time required for the flow of the given charges to give the 1.8 ampere.substitute with the givens in the above equation to get the time as follows: 1.8 = 2.5 / δtδt = 2.5 / 1.8 = 1.38888 which is approximately 1.4 secondshope this was !