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	Optical fibre are:	Cheap Flexible Lighter All of these
2	The refractive index of internal coating of optical fibre is:	1.56 1.51 1.53 1.58
3	Totally reflecting prism turns the incident ray at an angle of:	90<sup>o</sup> 60<sup>o</sup> 75<sup>o</sup> 45<sup>o</sup>
4	Totally reflecting prism is used in:	periscope binoculars periscope and binocular telescope
5	In totally reflecting prism one angle is of 90^o, and other two angles are of:	30<sup>o</sup>,30<sup>o</sup> 45<sup>o</sup>,90<sup>o</sup> 45<sup>o</sup>,45<sup>o</sup> 40<sup>o</sup>,40<sup>o</sup>
6	The totally reflectiing prism one angle is of:	45<sup>o</sup> 90<sup>o</sup> 180<sup>o</sup> 120<sup>o</sup>
7	To see from submarine the ship at the surface of water , we use:	Telescope Microscope Peri scope Prism
8	The angle of which prism deviates the incident ray is called:	angle of incident angle of reflection angle of deviation angle of minimum deviation
9	The minimum value of angle of deviation is called:	Minimum angle incident angle angle of minimum deviation None of these
10	The ray of light striking to the side of prism is called:	refraction ray incident ray reflected ray emergent ray
11	Angle opposite to the base of triangle of prism is called:	angle of incidence angle of refraction angle of prism emerging angle
12	Critical angle for diamond is:	60<sup>o</sup> 24<sup>o</sup> 26<sup>o</sup> 49<sup>o</sup>