Physics - Study Mode
[#1276] The angle between the ________ and the incident ray is called the angle of incidence.
Correct Answer
(B) Normal
Explanation
Solution: The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection.
[#1277] A periscope works by the principle of
Correct Answer
(A) Total internal reflection
Explanation
Solution: A periscope works by the principle of total internal reflection.
[#1278] A periscope works on the principle of
Correct Answer
(B) Total internal reflection
[#1279] Total internal reflection can not take place when light goes from :
Correct Answer
(B) Water to glass
Explanation
Solution: Total internal reflection will not take place unless the incident light is traveling within the more optically dense medium towards the less optically dense medium. Total internal reflection can not take place when light goes from water to glass.
[#1280] A rear-view mirror for driving is
Correct Answer
(C) Convex
Explanation
Solution: Type of mirror used in the rear-view mirror must be convex mirrors, because it creates smaller, yet still upright images. Concave mirrors would create an inverted image and the cars you see are not upside down.