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Light Reflection & Refraction
5 Theory-Based MCQ Tests • 10 Questions Each • 50 Questions
Instructions
- 5 separate tests with 10 questions each.
- Only theory/concept-based questions are included.
- Submit a test to calculate your score.
- Correct answers remain hidden until the password is entered.
Password required after submission to reveal correct answers.
Test 1 — Mirrors & Focal Length
10 questions • 1 mark each1. For determining the focal length of a concave mirror using a distant object, which type of object gives the best result?
2. When a distant object is focused sharply by a concave mirror on a screen, where is the image formed?
3. Which distance should be measured to determine the focal length of a concave mirror using a distant object?
4. The image of a distant object formed by a concave mirror is generally:
5. A concave mirror can form a real image of a distant object because the reflected rays:
6. Why is a well-lit distant object preferred for determining the focal length of a concave mirror?
7. If a student changes from a nearby object to a distant object while using a concave mirror, the screen generally needs to be moved:
8. Which apparatus is appropriate for determining the focal length of a concave mirror?
9. When the object is at infinity, the rays incident on a concave mirror are considered:
10. If the screen is removed after focusing a distant object with a concave mirror, the image:
Correct answers are locked.
Test 2 — Convex Lens & Image Formation
10 questions • 1 mark each1. A convex lens is called a converging lens because it:
2. A distant object viewed through a convex lens forms its image approximately at the:
3. The image of a distant object formed by a convex lens on a screen is generally:
4. For determining the focal length of a convex lens using a distant object, what should be measured?
5. Which sequence is appropriate for finding the focal length of a convex lens using a distant object?
6. A ray parallel to the principal axis of a convex lens, after refraction, passes through the:
7. A ray passing through the optical centre of a thin convex lens generally emerges:
8. A ray passing through the principal focus before reaching a convex lens emerges:
9. If a convex lens forms a magnified real image on a screen, the image is:
10. Removing the screen after a convex lens has formed a real image does not remove the image because:
Correct answers are locked.
Test 3 — Refraction Through Glass Slab
10 questions • 1 mark each1. When light travels from air into glass, it generally bends:
2. In a rectangular glass slab, the angle of incidence is generally:
3. The emergent ray from a rectangular glass slab is:
4. The angle of emergence is measured between the:
5. The angle of refraction is measured between the:
6. What happens to a ray when it passes from a denser medium to a rarer medium?
7. The sideways shift between the original path of the incident ray and the emergent ray through a glass slab is called:
8. Why should the incident ray not fall normally on a rectangular glass slab in the tracing experiment?
9. In the glass slab experiment, the angle of incidence and angle of emergence are:
10. A major conclusion from tracing light through a rectangular glass slab is that the incident and emergent rays:
Correct answers are locked.
Test 4 — Prism & Dispersion
10 questions • 1 mark each1. When a ray passes through a glass prism, the emergent ray is generally:
2. The angle between the incident ray and emergent ray of a prism is called the:
3. When light enters a glass prism from air, it travels from a rarer to a denser medium and bends:
4. When light emerges from a glass prism into air, it bends:
5. The angle between a prism's two refracting faces is called the:
6. The angle of incidence is the angle between the incident ray and the:
7. The angle of emergence is the angle between the emergent ray and the:
8. Dispersion of white light by a glass prism produces:
9. In the dispersion of white light through a prism, the two extreme colours are:
10. The deviation of a ray through a prism occurs because the light is:
Correct answers are locked.
Test 5 — Experimental Concepts & Ray Optics
10 questions • 1 mark each1. Why is a distant, well-lit object preferred in a focal-length experiment?
2. Which setup is most suitable for tracing a ray through a rectangular glass slab?
3. In the glass slab experiment, why are pins used?
4. For better visibility of lateral displacement in a glass slab experiment, a larger suitable angle of incidence can be useful because it:
5. Which statement best describes Snell's law as used for refraction through a glass slab?
6. Which device forms a real image of a distant object that can be obtained on a screen?
7. Which device converges parallel rays and can form a real image on a screen?
8. What is the main purpose of adjusting the lens or mirror position in a focal-length experiment?
9. If a ray passes through a convex lens's optical centre, it is generally considered to emerge:
10. Which observation supports correct refraction through a rectangular glass slab?
Correct answers are locked.
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