Practice MCQs for Class 7 Science Chapter 11 Light Shadows And Reflections
Explore reliable objective questions for Chapter 11 Light Shadows And Reflections tailored for Class 7 learners. Utilizing these Science multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.
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A. sound waves and chirping
B. chemical signals released into the air
C. emission and flashing of light
D. vibrations in the ground
Show Answer & Explanation
Answer: (C) emission and flashing of light
Explanation:
According to the chapter, fireflies use light to communicate with each other. The text explicitly states that Jatin's grandparents explained fireflies are seasonal insects and they use light to communicate.
A. the Moon reflecting sunlight
B. a polished steel plate directing light
C. a burning candle flame
D. a glass pane allowing light to pass through
Show Answer & Explanation
Answer: (C) a burning candle flame
Explanation:
Objects that emit their own light are called luminous. A burning candle produces its own light, whereas the Moon only reflects light from the Sun, and the other options do not generate their own light.
A. the light beam became brighter
B. a bright spot could no longer be obtained on the screen
C. the holes realigned automatically
D. the light changed direction and still reached the screen
Show Answer & Explanation
Answer: (B) a bright spot could no longer be obtained on the screen
Explanation:
When all three holes were not in the same straight line, the light spot disappeared from the screen. This demonstrated that light travels in a straight line and cannot reach the screen if the path is blocked or misaligned.
A. the pipe material absorbs the light
B. light bends around the curves of the pipe
C. light travels in straight lines and cannot follow the bent path
D. the angle of the bend increases the distance too much
Show Answer & Explanation
Answer: (C) light travels in straight lines and cannot follow the bent path
Explanation:
The activity showed that while a candle flame could be seen through a straight pipe, it could not be seen through a bent pipe because light travels in a straight line and cannot follow a curved path.
A. thick cloth
B. cardboard
C. glass
D. tracing paper
Show Answer & Explanation
Answer: (C) glass
Explanation:
The chapter explains that light passes almost completely through transparent materials. Glass is a transparent material, whereas the others are either translucent or opaque and therefore block more light.
A. a source of light
B. an opaque object
C. a colored surface or screen
D. a screen or surface to observe the shadow
Show Answer & Explanation
Answer: (C) a colored surface or screen
Explanation:
• The chapter states that shadows are formed when an object blocks light from falling on a screen
• Three essential components are: a light source, an opaque object, and a screen
• The color of the object does not affect shadow formation—changing object color does not change shadow color
A. translucent objects do not form shadows at all
B. translucent objects form lighter shadows while opaque objects form darker shadows
C. translucent objects form larger shadows
D. the shadows are identical in darkness and appearance
Show Answer & Explanation
Answer: (B) translucent objects form lighter shadows while opaque objects form darker shadows
Explanation:
The chapter clearly distinguishes shadow characteristics: opaque objects form darker shadows, while translucent objects make lighter shadows. Some transparent objects can even create faint shadows.
A. refraction
B. absorption
C. reflection
D. diffusion
Show Answer & Explanation
Answer: (C) reflection
Explanation:
The chapter defines reflection of light as the change in direction of light by a mirror. This is demonstrated in Activities 11.5 and 11.6, where light beams change direction upon striking a mirror surface.
A. the left arm, same as yours
B. the right arm, appearing reversed
C. neither arm appears to move
D. both arms appear to move simultaneously
Show Answer & Explanation
Answer: (B) the right arm, appearing reversed
Explanation:
The chapter explains lateral inversion—a perceived left-right reversal in plane mirror images. When you raise your left arm, your image appears to raise its right arm because the mirror reverses the left-right orientation.
A. images are always inverted
B. images appear upright at all positions
C. images cannot be obtained on a screen
D. images grow larger the farther they are from the mirror
Show Answer & Explanation
Answer: (C) images cannot be obtained on a screen
Explanation:
Activity 11.7 showed that when a screen was placed both behind and in front of a mirror, no image appeared on the screen in either position. This demonstrates that plane mirror images are virtual and cannot be projected onto a screen.
A. the image is always brighter than the object
B. the image is the same size as the object
C. the image is inverted or upside down
D. the image appears in color regardless of object color
Show Answer & Explanation
Answer: (C) the image is inverted or upside down
Explanation:
Both Activity 11.9 and the "Dive Deeper" section confirm that a pinhole camera produces an inverted image—the image of the candle flame appeared upside down on the screen. This contrasts with mirror images, which are erect but laterally inverted.
A. one mirror only
B. two mirrors arranged in a Z-shaped pattern
C. three mirrors in a triangular arrangement
D. four mirrors at right angles
Show Answer & Explanation
Answer: (B) two mirrors arranged in a Z-shaped pattern
Explanation:
The chapter states that a simple periscope is made by placing two plane mirrors in a Z-shaped box, allowing reflection from two mirrors to enable viewing of objects not visible directly.
A. mirrors cannot be used for safety purposes
B. the word AMBULANCE is written backwards on ambulances so it reads correctly in the rear-view mirrors of vehicles ahead
C. mirrors must always be tilted at specific angles
D. all text written on mirrors appears upright
Show Answer & Explanation
Answer: (B) the word AMBULANCE is written backwards on ambulances so it reads correctly in the rear-view mirrors of vehicles ahead
Explanation:
The chapter notes that because of lateral inversion in plane mirrors, AMBULANCE is written reversed on ambulances. This way, when viewed in the rear-view mirror of the vehicle ahead, it reads correctly as AMBULANCE, alerting other drivers.
A. only the translucent paper creates patterns
B. the three mirrors create multiple images through reflections and reflections of reflections
C. the colored beads continuously change positions on their own
D. the patterns are created by the circular tube bending light
Show Answer & Explanation
Answer: (B) the three mirrors create multiple images through reflections and reflections of reflections
Explanation:
The chapter explains that the kaleidoscope uses three mirrors arranged in a triangular manner, and the multiple images form due to reflections of reflections. With three mirrors, many interesting patterns are created, and a different pattern appears each time the kaleidoscope is turned.
A. immediately, as light is instantaneous
B. about 8 minutes and 20 seconds
C. about 24 hours
D. several days
Show Answer & Explanation
Answer: (B) about 8 minutes and 20 seconds
Explanation:
The fascinating facts section states that light emitted by the Sun takes about 8 minutes and 20 seconds to reach the Earth, which is why we would not immediately know if the Sun stopped emitting light.
A. The Moon absorbs sunlight and stores it to emit later
B. The Moon reflects sunlight that falls on its surface back toward Earth
C. The Moon converts gravitational energy into visible light
D. The Moon is a luminous object that generates light through chemical reactions
Show Answer & Explanation
Answer: (B) The Moon reflects sunlight that falls on its surface back toward Earth
Explanation:
The chapter explicitly defines the Moon as a non-luminous object that does not emit its own light. It only reflects the light emitted by the Sun that falls on it, which is why we can see the Moon at night.
A. Light passed completely through, forming a clear image on the screen
B. Light was partially blocked, allowing some light to pass while creating a fainter glow
C. No light passed through at all, creating a complete darkness on the screen
D. Light was reflected back toward the source without reaching the screen
Show Answer & Explanation
Answer: (B) Light was partially blocked, allowing some light to pass while creating a fainter glow
Explanation:
The chapter states that light passes partially through translucent materials, whereas it passes almost completely through transparent materials and does not pass at all through opaque materials. The translucent materials allow some light transmission but not the full clarity of transparent ones.
A. The shadow becomes lighter in color
B. The shadow becomes smaller in size
C. The shadow becomes larger in size
D. The shadow disappears completely
Show Answer & Explanation
Answer: (C) The shadow becomes larger in size
Explanation:
• When an object is positioned closer to the light source, the light rays spread out more before hitting the screen
• This causes the object to block a larger angle of light rays
• As a result, a larger shadow is cast on the screen compared to when the object is farther from the light source.
A. Both images are upright and identical to the object
B. Both images are inverted relative to the object
C. The plane mirror image is erect, while the pinhole camera image is inverted
D. The pinhole camera image is erect, while the plane mirror image is inverted
Show Answer & Explanation
Answer: (C) The plane mirror image is erect, while the pinhole camera image is inverted
Explanation:
A pinhole camera creates an inverted (upside-down) image on a screen because light rays pass straight through the hole in a crisscross pattern. In contrast, a plane mirror produces an erect image that is the same way up as the object, though it is laterally inverted from left to right.
A. Light always reflects at a 90-degree angle regardless of the incident angle
B. Light reflects back in the same direction it came from
C. When the mirror is tilted, the reflected light changes direction while continuing to travel in straight lines
D. Reflected light bends and follows curved paths away from the mirror
Show Answer & Explanation
Answer: (C) When the mirror is tilted, the reflected light changes direction while continuing to travel in straight lines
Explanation:
Activity 11.6 demonstrates that tilting a shiny mirror causes the light spot on a wall to change position. The chapter notes that light always travels in straight lines and changes direction when falling on a shiny surface, with the reflected beam following the mirror's adjustment.
A. The mirror magnifies the object through refraction of light
B. Light rays from the entire tree can still reach the small mirror and reflect to form an image, though a complete image would not be visible from a single viewpoint
C. Mirrors create multiple reflections that combine to show the full object
D. Small mirrors have special properties that allow them to reflect images of larger objects
Show Answer & Explanation
Answer: (B) Light rays from the entire tree can still reach the small mirror and reflect to form an image, though a complete image would not be visible from a single viewpoint
Explanation:
Although a small mirror cannot show the entire large object at once due to its limited size, it can still reflect light rays coming from different parts of the tree. Different portions of the tree would be visible when viewing from different angles or positions, as the plane mirror reflects whatever light reaches its surface.
A. Glass mirrors replaced polished stone mirrors; the Aranmula Kannadi of Kerala preserved metal mirror-making
B. Metal mirrors were invented to replace stone mirrors; traditional glass-making survived in European countries
C. Curved mirrors replaced flat mirrors; shadow puppetry preserved the use of flat surfaces
D. Reflective paper replaced metal mirrors; the periscope technology kept mirror-making alive
Show Answer & Explanation
Answer: (A) Glass mirrors replaced polished stone mirrors; the Aranmula Kannadi of Kerala preserved metal mirror-making
Explanation:
The Fascinating Facts section states that when glass mirrors started being made, the art of making metal mirrors got lost gradually. However, in Kerala, the Aranmula Kannadi, a unique metal surface mirror, has been made for centuries, preserving this traditional craft despite the shift to glass mirrors.
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Practice MCQs for Class 7 Science Chapter 11 Light Shadows And Reflections
Class 7 Science Chapter 11 Light Shadows And Reflections Objective Test Questions
Test your conceptual understanding of Chapter 11 Light Shadows And Reflections with these targeted multiple-choice questions. Designed in alignment with the latest CBSE curriculum for Class 7 Science, these problem sets build accuracy and prepare students for objective exams.
NCERT-Aligned Objective Questions and Solutions
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FAQs
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By solving our CBSE Class 7 Science Chapter 11 Light Shadows And Reflections MCQs Set 01, Class 7 students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Science.
Yes, Science MCQs for Class 7 have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused CBSE exams.
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