(a) A charged particle enters at right angles into a uniform magnetic field as shown. What should be the nature of a charge on the particle if it begins to move in a direction pointing vertically out of the page due to its interaction with the magnetic field?(b) Between which two points of a concave mirror should an object be placed to obtain a magnification of, −3?(c) "The refractive index of carbon disulphide is 1.63". What is the meaning of this statement in relation to the speed of light?

(a) A charged particle enters at right angles into a uniform magnetic

1.	(a) A charged particle enters at right angles into a uniform magnetic field as shown. What should be the nature of a charge on the particle if it begins to move in a direction pointing vertically out of the page due to its interaction with the magnetic field?(b) Between which two points of a concave mirror should an object be placed to obtain a magnification of, −3?(c) "The refractive index of carbon disulphide is 1.63". What is the meaning of this statement in relation to the speed of light?
Answer» (a) A charged particle enters at right angles into a uniform magnetic field as shown. What should be the nature of a charge on the particle if it begins to move in a direction pointing vertically out of the page due to its interaction with the magnetic field? (b) Between which two points of a concave mirror should an object be placed to obtain a magnification of, −3? (c) "The refractive index of carbon disulphide is 1.63". What is the meaning of this statement in relation to the speed of light?