Class VI Physics: Light and Reflection

Light travels in a straight line.

Light travels in a straight line. So when the light passes through a bent pipe, it changes direction, and the candle flame is no longer in the line of sight.

One way to change the path of light is by reflection. When light falls on a shiny surface, it bounces back, changing its direction. Another way to change the path of light is through refraction, which is the bending of light as it passes from one medium to another.

<p>True (A)</p> Signup and view all the answers

<p>Reflection of light is the phenomenon of light bouncing back from a surface. When light hits such a surface, it changes direction and reflects back in a predictable way.</p> Signup and view all the answers

<p>The activity demonstrates that mirrors change the direction of light. The light hitting the mirror is reflected, and this reflected light is what we see as the image.</p> Signup and view all the answers

<p>The reflected light also changes direction, following the same angle as the original light. The angle of incidence equals the angle of reflection.</p> Signup and view all the answers

<p>You see the image of the slits in the mirror. This shows that an image is formed by the reflection of light from the mirror.</p> Signup and view all the answers

<p>Things are visible to us when light from the object reaches our eyes.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>The image is formed behind the mirror, at the same distance from the mirror as the object is in front of the mirror.</p> Signup and view all the answers

<p>When light falls on a polished or shiny surface, it reflects. This means the light bounces back from the surface, and the direction of the light changes.</p> Signup and view all the answers

<p>The sides are reversed, left becomes right and right becomes left.</p> Signup and view all the answers

<p>The word 'AMBULANCE' is written in reverse on the back of an ambulance, so that when a driver ahead of the ambulance looks in their rearview mirror, they can read the word correctly and give way to the ambulance.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Depending on the position of the object, a concave mirror can form two kinds of images: real and inverted images if the object is far from the mirror, and virtual and upright images if the object is closer to the mirror.</p> Signup and view all the answers

<p>A real image is an image formed by a lens or mirror when the light rays converge at a point. It can actually be projected onto a screen.</p> Signup and view all the answers

<p>A spherical mirror is a mirror whose reflecting surface is a part of a sphere. The curved surface of a spoon is a common example of a spherical mirror.</p> Signup and view all the answers

<p>A concave mirror is a spherical mirror where the reflecting surface curves inward. This makes it look like the inside of a spoon.</p> Signup and view all the answers

<p>A concave mirror can form both real and virtual images. A real image is formed when the object is placed far from the mirror, and it is inverted and magnified. A virtual image is formed when the object is placed close to the mirror, and it is upright and magnified.</p> Signup and view all the answers

<p>A lens is a piece of transparent material, usually glass or plastic, that refracts light as it passes through it.</p> Signup and view all the answers

<p>A convex lens is a lens that is thicker in the middle than at the edges. It causes light rays to converge, or bend inwards, after passing through it.</p> Signup and view all the answers

<p>Convex lenses are used in a variety of applications, including magnifying glasses, telescopes, cameras, and eyeglasses.</p> Signup and view all the answers

<p>A concave lens always forms a virtual, upright, and diminished image, meaning the image appears smaller than the object.</p> Signup and view all the answers

<p>When an object is placed beyond the center of curvature of a concave lens, a virtual, upright, and diminished image is formed. The image is located between the lens and the object, closer to the lens.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Sunlight is a mixture of seven colors: red, orange, yellow, green, blue, indigo, and violet.</p> Signup and view all the answers

<p>Light is a form of electromagnetic radiation that is visible to the human eye. It travels in waves and can also behave like particles.</p> Signup and view all the answers

<p>When a beam of white light passes through a prism, it is split into seven colors, making a rainbow. This shows that white light is a mixture of different colors.</p> Signup and view all the answers

<p>We can obtain white light again by mixing the seven colors of the rainbow. This can be done by using a rotating disc painted with the seven colors. When the disc rotates quickly, the colors blend together, appearing as white.</p> Signup and view all the answers

<p>You observe a beam of sunlight</p> Signup and view all the answers

<p>These experiences suggest that light travels in a straight line.</p> Signup and view all the answers

<p>The change in direction of light by a mirror is called reflection of light.</p> Signup and view all the answers

<p>Yes, the mirror changes the direction of light.</p> Signup and view all the answers

<p>Yes, you find a change in the direction of reflected light when you move the torch slightly to either side.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>You see the image of the slits.</p> Signup and view all the answers

<p>You observe that the flame of the candle appears as if a similar candle is placed behind the mirror.</p> Signup and view all the answers

<p>The image of the candle formed by the mirror is called the image of the candle.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>When you move the candle to different positions in front of the mirror, you observe that the image also moves accordingly.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The distance of the image from the mirror is always the same as the distance of the object from the mirror.</p> Signup and view all the answers

<p>When light falls on a shiny stainless steel plate or a shining steel spoon, it gets reflected.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Any polished or shiny surface can act as a mirror.</p> Signup and view all the answers

<p>When light falls on a mirror, it gets reflected.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>A plane mirror forms a virtual image.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>You see the right side of the object.</p> Signup and view all the answers

<p>When you write your name on a piece of paper and hold it in front of a plane mirror, the image of your name will be reversed.</p> Signup and view all the answers

<p>The word 'AMBULANCE' appears reversed in the mirror.</p> Signup and view all the answers

<p>The word 'AMBULANCE' is written in a strange manner so that when the driver of a vehicle ahead of an ambulance looks in their rearview mirror, they can read 'AMBULANCE' and give way to it.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers