An object is placed 60 cm in front of a concave mirror whose focal length is 20 cm. What is the image position?

a. 20 cm in front of the mirror
b. 30 cm in front of the mirror
.
c. 60 cm behind the mirror
d. 30 cm behind the mirror
2

Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?