This document is a 7th grade science test from the boys' section of Campus III of Al-Huda School. It contains 10 multiple choice questions testing knowledge of light and optics. The test covers topics like luminous and non-luminous objects, the terms used to describe how light interacts with mirrors and lenses, properties of images formed by mirrors and lenses, the speed of light, refraction, dispersion of white light through a prism, primary colors, and color perception. It includes spaces for the student's name, date, parent signature, and a maximum possible score.
1. AL-HUDA SCHOOL
Campus III (Boys Section)
Class Test 2013
Science
Grade VII
Name: _________________________________Date:____________
Time: 30 minutes Max. Marks: _________
Parent signature: ____________________________
Multiple Choice Questions
1. Objects that give out their own light are called
A) Transparent B) opaque C) luminous D) non-luminous
2. Which one of the following is a non-luminous body?
A) The Sun B) the moon C) the stars D) a TV screen
3. The angle at which a ray of light strikes a mirror is called
A) Reflected ray B) incident ray C) refracted ray D) normal
4. Which one of the following is not a property of an image formed in a plane mirror?
A) The image is as far behind the mirror as the object is in front of it. B) The image is upside
down. C) The image is laterally inverted. D) The image is virtual.
5. What is the speed of light in air?
A) 300 km/s B) 3000km/s C) 30000 km/s D) 300000 km/s
6. What is the change in direction of light called when it enters a material at an angle?
A) Reflection B) refraction C) diffraction D) diffusion
7. Which one of the following is not a property of an image formed by a concave lens?
A) The image appears smaller. B) The image is always upright. C) The image is magnified.
D) The image is virtual.
8. When a ray of white light is passed through a prism it splits into a continuous spread of color
called
A) A bean B) A spectrum C) A rainbow D) A lens
9. The primary colors are
A) Cyan, yellow magenta B) cyan, red, blue C) red, blue, green D) red, blue, yellow
10. What color can be seen when white light shines onto a red surface?
A) Red B) green C) Blue D) Yellow