Every question from this NCERT chapter, with a detailed explanation.
Consider the following statements regarding the reflection of light: 1. Only glass surfaces can change the direction of light falling on them. 2. A polished or shiny surface can act as a mirror. 3. The surface of water absorbs all light and cannot act as a mirror. Which of the statements given above are correct?
Consider the following statements regarding the distance of an image in a plane mirror: 1. The image is formed at the same distance behind the mirror as the object is in front of it. 2. If an object is moved closer to the mirror, the image moves farther away from the mirror. Which of the statements given above is/are correct?
The optical phenomenon where the left side of an object appears as the right side in a plane mirror is known as:
Consider the following statements about spherical mirrors: 1. If the reflecting surface of a spherical mirror is concave, it is called a concave mirror. 2. The outer surface of a steel spoon acts as a concave mirror. 3. The inner surface of a cut rubber ball represents a concave surface. Which of the statements given above is/are correct?
Consider the following statements regarding the image formed by a concave mirror: 1. A concave mirror can only form real images and never virtual images. 2. When the object is placed very close to the mirror, the image formed is erect and magnified. 3. It forms a real image when the object is placed at a large distance. Which of the statements given above is/are correct?
Concave mirrors are commonly used by dentists primarily to:
Consider the following applications: 1. Reflectors of torches 2. Rear-view mirrors of vehicles 3. Surveillance mirrors in shops In which of the above are concave mirrors typically used?
With reference to convex mirrors, consider the following statements: 1. They can form images of objects spread over a large area. 2. The image formed is always inverted and larger in size than the object. 3. They are commonly used as rear-view mirrors in vehicles. Which of the statements given above is/are correct?
Convex mirrors are preferred as rear-view mirrors in vehicles because they:
Consider the following statements about lenses: 1. A lens which feels thinner in the middle than at the edges is a convex lens. 2. A lens which feels thinner in the middle than at the edges is a concave lens. 3. Lenses are transparent objects that refract light. Which of the statements given above is/are correct?
With reference to the behavior of light passing through lenses, consider the following statements: 1. A convex lens converges the light falling on it. 2. A concave lens converges the light falling on it. 3. A convex lens is also called a diverging lens. Which of the statements given above is/are correct?
Consider the following statements regarding images formed by a convex lens: 1. It can form a real and inverted image. 2. It acts as a magnifying glass only when the object is placed at infinity. 3. It forms a virtual image when the object is placed very close to the lens. Which of the statements given above is/are correct?
Which of the following properties is characteristic of a concave lens?
Consider the following comparison between a Concave Mirror and a Convex Lens: 1. Both always form virtual images regardless of object distance. 2. Both can form virtual and magnified images when the object is close. 3. Both are used to converge light. Which of the statements given above is/are correct?
Consider the following comparison between a Convex Mirror and a Concave Lens: 1. Both always form virtual images. 2. Both always form inverted images. 3. Both always form images larger than the object. Which of the statements given above are correct?
With reference to the rainbow, consider the following statements: 1. It appears usually after rain when the Sun is low in the sky. 2. It is seen as a straight band of white light in the sky. 3. One can see a rainbow only when one's back is towards the Sun. Which of the statements given above is/are correct?
Consider the following statements about white light: 1. Sunlight is referred to as monochromatic light. 2. White light consists of seven colors. 3. A prism can be used to split white light into its constituent colors. Which of the statements given above are correct?
When a disc painted with the seven constituent colours of the spectrum is rotated rapidly, it appears whitish due to:
Consider the following statements regarding the image of a candle flame formed by a plane mirror: 1. It appears as if a similar candle is placed behind the mirror. 2. The candle placed in front of the mirror is referred to as the image. 3. The image formed is a real image. Which of the statements given above is/are correct?
Which one of the following is a significant environmental challenge associated with the electroplating industry?
Consider the following statements about the word 'AMBULANCE' written on emergency vehicles: 1. It is written in a reversed manner so that it looks correct in a plane mirror. 2. This is done because plane mirrors produce vertical inversion. Which of the statements given above is/are correct?
With reference to image formation by spherical mirrors, which of the following statements is correct?
Which of the following optical devices can form a real image of the Sun on a sheet of paper? 1. Plane Mirror 2. Concave Mirror 3. Convex Lens 4. Concave Lens Select the correct answer using the code given below:
Consider the following statements regarding the burning of paper using sunlight: 1. A concave mirror can burn paper by focusing sunlight. 2. A convex lens diverges sunlight and cannot burn paper. 3. The bright spot formed on the paper is the real image of the Sun. Which of the statements given above are correct?
A convex lens is technically referred to as a "converging lens" because it:
Consider the following statements about a magnifying glass: 1. It is actually a type of concave lens. 2. It is used to read very small print. 3. It forms an erect and magnified image. Which of the statements given above are correct?
With reference to the dispersion of light, consider the following statements: 1. A prism splits a beam of sunlight into seven colors. 2. This phenomenon shows that sunlight consists of a single color. 3. Rainbows are caused by the reflection of light from the moon. Which of the statements given above is/are correct?
Consider the following statements regarding the image formed by a concave lens: 1. It is always virtual. 2. It is always inverted. 3. It is always smaller than the object. Which of the statements given above is/are correct?
Which of the following pairs is/are correctly matched regarding the nature of the image formed? 1. Plane Mirror: Erect and same size 2. Convex Mirror: Erect and smaller 3. Concave Lens: Erect and magnified Select the correct answer using the code given below:
Consider the following statements about Newton's Disc: 1. It is a disc painted with only black and white sectors. 2. When rotated fast, the colors blend to give a white appearance. 3. It demonstrates that white light is composed of seven colors. Which of the statements given above is/are correct?
When an object is placed within the focal length of a convex lens, the resulting image is:
Consider the following statements regarding the reflection of light by a spoon: 1. The inner side of a spoon produces an erect and larger image when the face is very close. 2. The outer side of a spoon always produces an inverted image. 3. Increasing the distance from the inner side causes the image to disappear completely. Which of the statements given above are correct?
Consider the following phenomena: 1. Soap bubbles appearing colorful. 2. Light reflected from a Compact Disk (CD) appearing monochromatic. 3. Rainbow in the sky. Which of the above phenomena indicate that sunlight is a mixture of different colors?
Which of the following correctly describes the nature of the image formed by a convex mirror for any real object?
The observation that one cannot view a light source through a bent pipe demonstrates which property of light?
Which of the following combinations correctly describes the characteristics of an image formed by a plane mirror?
Which type of mirror is typically employed by dentists to examine the magnified image of teeth?
Which optical component is standardly used as a side-view mirror in automobiles?
Which of the following optical devices is classified as a "converging lens"?
Which of the following optical devices is classified as a "diverging lens"?
A simple magnifying glass is essentially composed of which type of lens?
The phenomenon where light bounces back into the same medium after striking a surface is called:
In optics, an image that cannot be projected or obtained on a screen is termed a:
The reflectors used in torches and vehicle headlights are typically of which shape?
Which optical lens always forms a virtual, erect, and diminished image of a real object?
What is the nature of the image formed by a convex mirror for a real object?
Which device is used to demonstrate the recombination of the seven spectrum colours into white light?
Which optical phenomenon is typically visible in the sky when the sun is low and it has recently rained?
In the case of a plane mirror, the distance of the image behind the mirror is:
In the context of the visible spectrum, light that is composed of all seven constituent colours is referred to as: