Questions :-
1. Name the ray which travels from source to the reflecting surface.
(a) Reflected ray
(b) Incident ray
(c) Refracted ray
(d) None of these
2. Name the ray which comes back from the surface after reflection.
(a) Reflected ray
(b) Incident ray
(c) Refracted ray
(d) None of these
3. How many laws of reflection?
(a) Three
(b) Two
(c) Four
(d) Five
4. Second law of reflection states that _________
(a) Angle of incidence is always less than angle of reflection
(b) Angle of incidence is always more than angle of reflection.
(c) Angle of incidence is always equal to the angle of reflection.
(d) None of these
5. First law of reflection states that ____________
(a) The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
(b) The incident ray, the normal at the point of incidence and the refracted ray all lie in the same plane.
(c) The refracted ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
(d) None of these
6. Splitting of light into its constituent colour is known as ___________
(a) Deviation
(b) Dispersion
(c) Both
(d) None
7. Reflection from a smooth surface like that of a mirror is called __________
(a) Regular reflection
(b) Irregular reflection
(c) Lateral reflection
(d) None of these
8. When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as ____________
(a) Regular reflection
(b) Irregular reflection
(c) Lateral reflection
(d) None of these
9. Name the phenomena in which left appears to be right and vice versa.
(a) Regular reflection
(b) Irregular reflection
(c) Lateral inversion
(d) None of these
10. Name the optical device used to see objects that are not along the line of sight.
(a) Periscope
(b) Kaleidoscope
(c) Both
(d) None
Chapter - 16 Light Test 1 | Class - 8th Science
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Question 1 of 10
1. Question
Name the ray which travels from source to the reflecting surface.
Correct
Incident ray travels from source to the reflecting surface.
Incorrect
Incident ray travels from source to the reflecting surface.
-
Question 2 of 10
2. Question
Name the ray which comes back from the surface after reflection.
Correct
Reflected ray comes back from the surface after reflection.
Incorrect
Reflected ray comes back from the surface after reflection.
-
Question 3 of 10
3. Question
How many laws of reflection?
Correct
There are two laws of reflection.
Incorrect
There are two laws of reflection.
-
Question 4 of 10
4. Question
Second law of reflection states that _________
Correct
Second law of reflection states that angle of incidence is always equal to the angle of reflection.
Incorrect
Second law of reflection states that angle of incidence is always equal to the angle of reflection.
-
Question 5 of 10
5. Question
First law of reflection states that ____________
Correct
The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
Incorrect
The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
-
Question 6 of 10
6. Question
Splitting of light into its constituent colour is known as ___________
Correct
Splitting of light into its constituent colour is known as dispersion.
Incorrect
Splitting of light into its constituent colour is known as dispersion.
-
Question 7 of 10
7. Question
Reflection from a smooth surface like that of a mirror is called __________
Correct
Reflection from a smooth surface like that of a mirror is called regular reflection.
Incorrect
Reflection from a smooth surface like that of a mirror is called regular reflection.
-
Question 8 of 10
8. Question
When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as ____________
Correct
When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as irregular reflection.
Incorrect
When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as irregular reflection.
-
Question 9 of 10
9. Question
Name the phenomena in which left appears to be right and vice versa.
Correct
The phenomena in which left appears to be right and vice versa is known as lateral inversion.
Incorrect
The phenomena in which left appears to be right and vice versa is known as lateral inversion.
-
Question 10 of 10
10. Question
Name the optical device used to see objects that are not along the line of sight.
Correct
Periscope is the optical device used to see objects that are not along the line of sight.
Incorrect
Periscope is the optical device used to see objects that are not along the line of sight.