 |  Light Energy 52 Flashcards |  Start |
 | What is the speed of light in water? |  Card: 1 / 52 |
| 2.25 × 10⁸ m s⁻¹ | Card: 2 / 52 |
| Fill in the blank: The change in direction of path of light when it passes from one transparent medium to another is called ______. | Card: 3 / 52 |
| Refraction of light | Card: 4 / 52 |
| True or False: Light bends away from the normal when it moves from a denser medium to a rarer medium. | Card: 5 / 52 |
| True | Card: 6 / 52 |
| Riddle: I can help you see a reflection of your face, but I won't show you what's behind me. What am I? | Card: 7 / 52 |
| A mirror | Card: 8 / 52 |
| According to Snell's law, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is always constant for two mediums. This constant is called ______. | Card: 9 / 52 |
| Refractive index | Card: 10 / 52 |
| Which of the following is a type of spherical mirror? A) Plane B) Concave C) Flat D) None of the above | Card: 11 / 52 |
| B) Concave | Card: 12 / 52 |
| True or False: The focus of a convex mirror is a real point where light rays actually converge. | Card: 13 / 52 |
| False. The focus of a convex mirror is virtual and does not actually converge. | Card: 14 / 52 |
| What happens to light rays when they move from air to glass? | Card: 15 / 52 |
| They bend towards the normal. | Card: 16 / 52 |
| Fill in the blank: The point on the principal axis at which light rays parallel to the axis meet after reflection from a concave mirror is called the ______. | Card: 17 / 52 |
| Focus | Card: 18 / 52 |
| In a prism, when white light is separated into a spectrum, what are the seven colors called? | Card: 19 / 52 |
| Violet, Indigo, Blue, Green, Yellow, Orange, Red (VIBGYOR) | Card: 20 / 52 |
| Riddle: I split white light into colors and have a triangular shape. What am I? | Card: 21 / 52 |
| A prism | Card: 22 / 52 |
| True or False: The angle of incidence is always equal to the angle of refraction. | Card: 23 / 52 |
| False. The angle of incidence equals the angle of reflection, not refraction. | Card: 24 / 52 |
| What type of image is always formed by a convex mirror? | Card: 25 / 52 |
| Virtual, erect, and diminished | Card: 26 / 52 |
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| Fill in the blank: The distance between the pole and the focus of a spherical mirror is called ______. | Card: 27 / 52 |
| Focal length | Card: 28 / 52 |
| Which color of light has the highest refractive index in glass? | Card: 29 / 52 |
| Violet light | Card: 30 / 52 |
| What is the effect called when we see the sun before it actually rises due to light bending? | Card: 31 / 52 |
| Refraction | Card: 32 / 52 |
| True or False: A real image can be captured on a screen. | Card: 33 / 52 |
| True | Card: 34 / 52 |
| Riddle: I am a mirror that helps you see traffic behind you, but my image is always smaller. What am I? | Card: 35 / 52 |
| A convex mirror | Card: 36 / 52 |
| What is the principal axis of a spherical mirror? | Card: 37 / 52 |
| A straight line that passes through the pole and the center of curvature. | Card: 38 / 52 |
| Fill in the blank: The bending of light rays when passing through a prism is called ______. | Card: 39 / 52 |
| Dispersion | Card: 40 / 52 |
| Which type of mirror is used in solar cookers to focus sunlight? | Card: 41 / 52 |
| Concave mirror | Card: 42 / 52 |
| What is the relationship between the radius of curvature and the focal length of a concave mirror? | Card: 43 / 52 |
| Focal length = 1/2 × Radius of curvature | Card: 44 / 52 |
| What type of image is formed by a concave mirror when the object is placed between the focus and the pole? | Card: 45 / 52 |
| Virtual, erect, and larger | Card: 46 / 52 |
| Fill in the blank: The imaginary line perpendicular to the surface at the point where the incident ray hits is called the ______. | Card: 47 / 52 |
| Normal | Card: 48 / 52 |
| Which phenomenon explains why objects appear closer when viewed through water? | Card: 49 / 52 |
| Refraction | Card: 50 / 52 |
| True or False: The refractive index of a medium is the same for all colors of light. | Card: 51 / 52 |
| False. The refractive index varies with the color of light. | Card: 52 / 52 |
| Completed! Keep practicing to master all of them. |  Restart |
