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	The critical angle for glass to:	24<sup>o</sup> 48<sup>o</sup> 42<sup>o</sup> 50<sup>o</sup>
2	When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90^o is called:	angle of incidence critical angle angle of refrection None of these
3	The ratio of image height to object height is called:	Linear magnification Power Refraction Radius of curative
4	Bouncing back of light after striking the surface is called:	Refraction Reflection Diffraction Interference
5	Focal length for concave mirror is :	-ve +ve same none of these
6	Concave mirror formula is given by:	R = 2r sin<i/sin<r 1/f=1/p+1/q 1/f=1/p-1/q
7	Snell' law is:	n = sin<x/sin <r n=sin <i/sin<r n = sin <r/sin<i <i/<r
8	The distance of image from mirror is represented by:	q p F m
9	The distance of the object from the mirror is represented by :	q p m F
10	Magnification of mirror is given by:	m=p/q m=q/p m=pxq m=1/p+q
11	Spherical mirrors are used in:	Medical Search light Microscope All of these
12	The ray of the light after reflection from concave mirror passes through:	Centre Principal focus Pole None of these