Matric Part 2 Physics chapter 12 online mcq test with answers for 10th class chemistry unit 12 (Spherical Mirrors and Lenses)

Physics 10th Class English Medium Unit 3 Online Test

Sr. #	Questions	Answers Choice
1	Mathematical relationship between critical angle "C" and refractive index "n" is:	N = C N = 1 / sin c N = 1 / cos c N = 1 / sin2 c
2	Snell's law is stated as:	Sin i / sin r = n1/n2 sin i / sin r = n2/n1 sin r / sin i = n2/n1 sin r / sin i = 2n2/n1
3	An object is placed 6 cm away in front of a concave mirror that has 10 cm focal length. Determine the location of the image:	-5 cm -10 cm -15 cm -20 cm
4	The focal length is related to radius of curvature by the formula:	f = 2R f = 4R f = R/2 R = f/2
5	The principal focus of a concave mirror is:	Virtual Real Imaginary Dual aspect
6	In a convex mirror the size of the image:	Is smaller than the size of the object Is greater than the size of the object Depends upon the position of the object Is equal to the size of the object