Chapter 11: Light Shadows and Reflections — Online MCQ Test
SCIENCE · Grade 7 · CBSE(NCERT)
Practice Chapter 11: Light Shadows and Reflections with a free chapter-wise online MCQ test.
This chapter covers: Light Reflection Shadow Mirror Transparent Opaque Translucent Ray Reflection laws Image formation.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 11: Light Shadows and Reflections — Important Questions & Answers
Which of the following is a luminous object?
- A. Moon
- B. Mirror
- C. Sun
- D. Book
Answer: C. Sun
The Sun gives out its own light, so it is a luminous object. The Moon and the book do not produce light by themselves.
The Sun gives out its own light, so it is a luminous object. The Moon and the book do not produce light by themselves.
Objects that allow light to pass through them completely are called:
- A. Opaque
- B. Translucent
- C. Transparent
- D. Reflective
Answer: C. Transparent
Transparent objects let most or all light pass through them. Examples include clear glass and clean water.
Transparent objects let most or all light pass through them. Examples include clear glass and clean water.
Which of the following best describes reflection of light?
- A. Light passing through a glass slab
- B. Light bouncing back after striking a surface
- C. Light getting absorbed by a black object
- D. Light changing into heat only
Answer: B. Light bouncing back after striking a surface
Reflection is the bouncing back of light from a surface. Mirrors produce clear reflections because they reflect light well.
Reflection is the bouncing back of light from a surface. Mirrors produce clear reflections because they reflect light well.
A child stands near a lamp. When the child moves farther away from the lamp, the shadow on the ground becomes larger. This happens because:
- A. light becomes weaker with distance only
- B. the object blocks a larger spread of rays from the lamp
- C. the shadow changes into a reflection
- D. the ground becomes transparent
Answer: B. the object blocks a larger spread of rays from the lamp
When the object moves away from the light source, the rays spread out more and the shadow becomes larger. This is a common observation in shadow formation.
When the object moves away from the light source, the rays spread out more and the shadow becomes larger. This is a common observation in shadow formation.
A student sees their image in a mirror. Which feature of the mirror makes image formation possible?
- A. It absorbs all light
- B. It is opaque and dark
- C. It reflects light regularly from a smooth surface
- D. It allows all light to pass through
Answer: C. It reflects light regularly from a smooth surface
A mirror forms an image because its smooth surface reflects light regularly. This regular reflection allows the reflected rays to appear to come from behind the mirror.
A mirror forms an image because its smooth surface reflects light regularly. This regular reflection allows the reflected rays to appear to come from behind the mirror.