At Bodhiclasses, we aim to make learning joyful and thorough by providing conceptual clarity through well-structured tests and answer sheets. Here is a carefully designed sample question paper on Chapter 11: Light – Shadows and Reflections from Class 7 Science NCERT. Use this as a self-assessment tool or for school practice.
Sample Question Paper: Light – Shadows and Reflections
Subject: Science
Class: 7
Chapter: 11 – Light: Shadows and Reflections
Time: 1 hour
Full Marks: 30
Section A: Multiple Choice Questions (1 mark each)
- Which of the following is a luminous object?
a) Moon
b) Mirror
c) Star
d) Table - Light travels in a:
a) Zigzag path
b) Curved path
c) Straight line
d) Random path - A plane mirror forms an image that is:
a) Inverted
b) Smaller than the object
c) Real
d) Laterally inverted - An object that does not allow light to pass through is called:
a) Transparent
b) Opaque
c) Translucent
d) Shiny - A pinhole camera forms an image that is:
a) Virtual and erect
b) Virtual and inverted
c) Real and erect
d) Real and inverted
Section B: Very Short Answer Questions (1 mark each)
- Name a natural source of light.
- Define a shadow.
- What is lateral inversion?
- Name any one application of a periscope.
- What is meant by a translucent object?
Section C: Short Answer Questions (2 marks each)
- What are the three conditions required for the formation of a shadow?
- How is an image formed in a plane mirror different from that in a pinhole camera?
- State two differences between transparent and opaque materials.
- Why do shadows change length during the day?
- Why are shadows not formed in a completely dark room?
Section D: Higher Order Thinking Skills (HOTS) Questions (3 marks each)
- Riya sees two shadows of a tree in the evening. One is dark and sharp, and the other is lighter and faint. Explain why this happens.
- A periscope is used to see above obstacles. Explain how reflection helps in its working using a simple diagram.
- Your name appears reversed when seen in a plane mirror. Write the scientific reason for this and give one real-life example where this is applied.
Answer Key: Light – Shadows and Reflections
Section A:
- c) Star
- c) Straight line
- d) Laterally inverted
- b) Opaque
- d) Real and inverted
Section B:
- Sun
- A shadow is a dark area formed when an object blocks light.
- Lateral inversion is the left-right reversal of an image in a plane mirror.
- Used in submarines or bunkers.
- A translucent object allows partial light to pass through it.
Section C:
- A light source, an opaque object, and a screen.
- Plane mirror: Virtual, erect image. Pinhole camera: Real, inverted image.
- Transparent: Allows full light through. Opaque: Blocks all light.
- Due to the changing angle of the Sun during the day.
- Because there is no light source to be blocked and form a shadow.
Section D:
- The sharp shadow is formed by a single strong light source. The lighter one is due to a second, dimmer or diffused source causing overlapping shadows.
- Light from the object strikes one mirror at a 45° angle and reflects to the second mirror, which reflects it to the observer’s eye.
- It is due to lateral inversion. Example: The word “AMBULANCE” is written in reverse on vehicles so it appears correctly in the rear-view mirror of cars ahead.
