Our ncert solutions for Solutions 14. Chemical Effects of Electric Current - Additional Questions With Solutions | Class 8 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.
Solutions 14. Chemical Effects of Electric Current - Additional Questions With Solutions | Class 8 Science - Toppers Study
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Solutions 14. Chemical Effects of Electric Current - Additional Questions With Solutions | Class 8 Science - Toppers Study
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Chapter 14 Science class 8
Additional Questions With Solutions class 8 Science Chapter 14. Chemical Effects of Electric Current
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14. Chemical Effects of Electric Current
| Additional Questions With Solutions |
Solutions 14. Chemical Effects of Electric Current - Additional Questions With Solutions | Class 8 Science - Toppers Study
Additional Questions With Solutions
Ques: What is incident ray?
Ans:The light ray, which strikes any surface, is called the incident ray.
Ques: What is reflected ray?
Ans:The ray that comes back from the surface after reflection is known as the reflected ray.
Ques: Write the law of reflection.
Ans:
(i) Angle of incidence is always equal to the angle of reflection.
(ii) The incidence ray, the normal at the point of incidence and the reflected ray all lie in the same plane.
Ques: What is diffused or irregular reflection?
Ans:When all parallel rays reflected from a plane surface are not parallel, the reflection is known as diffused or irregular reflection.
Ques: What is regular reflection?
Ans:Reflection from a smooth surface like that of a mirror is called regular reflection.
Ques: What is called the phenomenon, in an image formed by a mirror the left of the object appears on the right and the right appears on the left?
Ans: This phenomenon is called lateral inversion.
Ques: Write the use of Periscopes.
Ans:Periscopes are used in submarines, tanks and also by soldiers in bunkers to see things outside.
Ques: What is Kaleidoscope? Write its one use.
Ans:Kaleidoscope is an idea or a device that is made to combine the mirrors at an angle to one another to get number of images. It is used to make numerous beautiful patterns.
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