At Bodhiclasses, we believe learning should go beyond the textbook. That’s why we bring you carefully crafted extra questions and answers to help you dive deeper, practice more, and score better. Whether you’re preparing for school tests or want to strengthen your concepts, this resource on Light – Shadows and Reflections (Class 7 Science Chapter 11) is made just for you.
Multiple Choice Questions (MCQs)
- Which of the following objects is non-luminous?
a) Sun
b) Torch
c) Moon
d) Firefly
Answer: c) Moon - Light travels in:
a) Circular path
b) Zigzag path
c) Curved path
d) Straight line
Answer: d) Straight line - Which of these can form a shadow?
a) Transparent object
b) Opaque object
c) Mirror
d) None
Answer: b) Opaque object - A mirror changes the ______ of light.
a) Speed
b) Direction
c) Nature
d) Intensity
Answer: b) Direction - Which of the following forms a virtual image?
a) Pinhole camera
b) Plane mirror
c) Shadow
d) Torch
Answer: b) Plane mirror - What is the nature of an image formed in a plane mirror?
a) Real, inverted
b) Virtual, erect
c) Real, erect
d) None
Answer: b) Virtual, erect - The image formed in a pinhole camera is:
a) Erect
b) Same size
c) Inverted
d) Virtual
Answer: c) Inverted - Which of the following materials is translucent?
a) Wood
b) Clear glass
c) Wax paper
d) Steel
Answer: c) Wax paper - In which of these devices are multiple reflections used to create patterns?
a) Periscope
b) Torch
c) Kaleidoscope
d) Mirror
Answer: c) Kaleidoscope - The shadow is longest when the Sun is:
a) Overhead
b) Just risen or about to set
c) At noon
d) Directly behind the object
Answer: b) Just risen or about to set
One-Mark Questions
- What are luminous objects?
Answer: Objects that emit their own light. - Name one natural and one artificial source of light.
Answer: Natural – Sun; Artificial – Electric bulb. - What is an opaque object?
Answer: An object that does not allow light to pass through. - Define a shadow.
Answer: A shadow is a dark area formed when an object blocks light. - What is meant by lateral inversion?
Answer: The left-right reversal of an image in a mirror. - Name the three types of materials based on light passage.
Answer: Transparent, translucent, opaque. - What kind of image does a plane mirror form?
Answer: Virtual, erect, same size, and laterally inverted image. - What do we need to form a shadow?
Answer: A light source, an opaque object, and a screen. - What is reflection?
Answer: Bouncing back of light from a surface. - What type of mirror is used in a periscope?
Answer: Plane mirror.
Two-Mark Questions
- Why does the Moon shine if it is a non-luminous object?
Answer: The Moon reflects sunlight, which makes it appear to shine. - How do transparent and translucent objects differ?
Answer: Transparent objects allow all light to pass; translucent allow only partial light through. - State two properties of shadows.
Answer: Shadows are dark and are always formed on the opposite side of the light source. - What is the difference between the images formed by a mirror and a pinhole camera?
Answer: Mirror forms a virtual, erect image; pinhole camera forms a real, inverted image. - Give two uses of a periscope.
Answer: Used in submarines and by soldiers to see beyond obstacles. - What happens to a shadow when the distance between the object and screen is reduced?
Answer: The shadow becomes smaller and sharper. - Why can’t we see through an opaque object?
Answer: Because it blocks all light from passing through. - What causes the difference in shadow length at different times of the day?
Answer: The angle of sunlight changes throughout the day, affecting shadow length. - Why does a kaleidoscope show multiple patterns?
Answer: Due to multiple reflections of colored objects inside angled mirrors. - How is a shadow different from an image?
Answer: A shadow is a dark area formed due to obstruction of light; an image is a visible reproduction formed by reflection or refraction.
Higher Order Thinking Skills (HOTS)
- Why do we not see the shadow of a bird flying high in the sky, but we see it when the bird is near the ground?
Answer: At high altitudes, the bird is too far to cast a visible shadow on the ground. Near the ground, the shadow becomes noticeable due to the proximity and sharper obstruction of light. - If two torches are pointed at an object from different angles, how many shadows will be formed and why?
Answer: Two shadows will form because each torch creates a separate path of light being blocked, resulting in multiple overlapping or adjacent shadows. - Why is a pinhole camera image always inverted?
Answer: Light rays cross at the pinhole; the top rays go to the bottom and vice versa, forming an upside-down image. - In a dark room, why can’t we see objects even though they are present?
Answer: Without a light source, no light is reflected from the objects into our eyes, so we cannot see them. - Why does the image in a plane mirror appear to be behind the mirror?
Answer: Because the light rays appear to diverge from a point behind the mirror due to reflection, creating a virtual image.
