• #### Class 8 Science Study Material

An Educational platform for Preparation and Practice Class 8. Kidsfront provide unique pattern of learning Science with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Science for Class 8. This study material help Class 8, Science students in learning every aspect of Light . Students can understand Light concept easily and consolidate their learning by doing Online Practice Tests on Science,Light chapter repeatedly till they excel in Class 8, Light . Free ONLINE PRACTICE TESTS on Class 8, Light comprise of Hundreds of Questions on Light , prepared by the highly professionals team. Every repeat test of Light will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Light . Attempt ONLINE TEST on Class 8,Science,Light in Academics section after completing this Light Question Answer Exercise.

Unique pattern

• Topic wise:Light preparation in the form of QUESTION & ANSWER.
• Evaluate preparation by doing ONLINE TEST of Class 8, Science,Light .
• Review performance in PRACTICE TEST and do further learning on weak areas.
• Attempt repeat ONLINE TESTS of Science Light till you excel.
• Evaluate your progress by doing ONLINE MOCK TEST of Class 8, Science, All TOPICS.

##### A boy is running towards a plane mirror with speed 20 ms-1. As seen by the boy, the image moves with the speed of

a) 20 ms-1 towards him.
b) 40 ms-1 towards him.
c) 60 ms-1 towards him.
d) 80 ms-1 towards him.

a) 0o.
b) 30o.
c) 60o.
d) 90o.

a) 0o.
b) 30o.
c) 60o.
d) 90o.

a) 30o.
b) 45o.
c) 90o.
d) 180o.

##### An incident ray makes 30o with the normal at the point of incidence. The reflected ray will make

a) 30o with the normal.
b) 60o with the normal.
c) 90o with the normal.
d) 180o with the normal.

##### A reflected ray always makes an angle

a) Of 90o with the normal.
b) Of any degree with the normal.
c) Of 90o with the incident ray.
d) Equal to the angle of incidence with the normal.

##### To prove experimentally, that white light consists of seven colours, we use a

a) Square card board cloured with seven colours of rainbow.
b) Black coloured card board.
c) Cirular disc cloured with seven colours of rainbow.
d) Rectangular card cloured with seven colours of rainbow.

##### The wavelength of visible light is in the range

a) 4 × 10-7 m to 8 × 10-7 m.
b) 4 × 107 m to 8 × 107 m.
c) 4 × 103 m to 8 × 103 m.
d) 4 × 104 m to 8 × 104 m.

a) Real.
b) Virtual.
c) Upright.
d) Inverted.

##### According to the laws of reflection

a) Angle i = Angle r
b) Sine i = sine r
c) Sine i / Sine r = constant
d) Tani= tan r

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