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Light Practice Questions

Class 7 · Science · 1042 free MCQs with instant results and detailed explanations.

1042
Total
339
Easy
515
Medium
188
Hard

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Topics in Light

Reflection 278
Plane Mirror 232
Sunlight and Colours 297
Concave and Convex 235

Sample Questions from Light

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
What happens to light when it strikes a smooth surface at an angle?
A. It reflects at the same angle
B. It bends
C. It disappears
D. It scatters
Show Answer & Explanation
Correct Answer: A
When light strikes a smooth surface, it reflects at the same angle of incidence, obeying the law of reflection.
Q2
Easy
Which of the following materials reflects the most light?
A. Glass
B. Wood
C. Mirror
D. Paper
Show Answer & Explanation
Correct Answer: C
Mirrors are designed to reflect light efficiently, making them more reflective compared to glass, wood, and paper.
Q3
Easy
If a light ray strikes a plane mirror at an angle of 30°, what is the angle of reflection?
A. 30°
B. 60°
C. 45°
D. 90°
Show Answer & Explanation
Correct Answer: A
According to the law of reflection, the angle of reflection is equal to the angle of incidence. Thus, it is 30°.
Q4
Medium
What happens to light when it strikes a smooth surface at an angle?
A. It scatters in all directions.
B. It reflects at the same angle.
C. It is absorbed completely.
D. It bends and changes direction.
Show Answer & Explanation
Correct Answer: B
When light strikes a smooth surface, it reflects off at the same angle, according to the law of reflection.
Q5
Medium
If a ray of light makes an angle of 30 degrees with the normal upon striking a flat mirror, what is the angle of reflection?
A. 30 degrees
B. 60 degrees
C. 90 degrees
D. 15 degrees
Show Answer & Explanation
Correct Answer: A
According to the law of reflection, the angle of incidence is equal to the angle of reflection, so it will also be 30 degrees.
Q6
Medium
Which of the following surfaces would most likely produce a clear reflection?
A. A rough wall
B. A still pond
C. A crumpled sheet of paper
D. A wooden table
Show Answer & Explanation
Correct Answer: B
A still pond acts like a smooth surface which allows for clear reflections, unlike rough surfaces that scatter light.
Q7
Medium
What type of mirror is used to make a car's side view mirror?
A. Plane mirror
B. Concave mirror
C. Convex mirror
D. Parabolic mirror
Show Answer & Explanation
Correct Answer: C
Convex mirrors are used in side view mirrors as they provide a wider field of view, allowing drivers to see more area behind them.
Q8
Hard
What happens to light when it strikes a smooth, shiny surface?
A. It scatters in all directions.
B. It is absorbed by the surface.
C. It reflects in a single direction.
D. It bends and refracts.
Show Answer & Explanation
Correct Answer: C
Light reflects off smooth surfaces in a single direction, which is known as specular reflection.
Q9
Hard
If the angle of incidence is 30 degrees, what is the angle of reflection?
A. 15 degrees
B. 30 degrees
C. 60 degrees
D. 90 degrees
Show Answer & Explanation
Correct Answer: B
According to the law of reflection, the angle of incidence equals the angle of reflection.
Q10
Hard
Which of the following scenarios best demonstrates the concept of reflection?
A. A rainbow appearing after rain.
B. Seeing your face in a mirror.
C. The bending of light through a prism.
D. The scattering of light by fog.
Show Answer & Explanation
Correct Answer: B
Seeing your face in a mirror is a clear example of light reflection from a surface.

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Light — Class 7 Science Practice Questions Online

This page contains 1042 practice MCQs for the chapter Light in Class 7 Science. The questions are organized by difficulty — 339 easy, 515 medium, 188 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.