Question

Fill in the blanks.

1. Light travels in a ___ line.

2. The narrow path of light, represented by a straight line is called a ___ of light.

3. A bundle of light rays coming from a broad source and converging at a point is called a ___ beam of light.

4. The image formed by a plane mirror is as ___ behind the mirror, as the ___ is in front of it.

5. A concave lens in spectacles, helps people to see ____ objects clearly.

6. A ray of light, incident on a concave mirror, passing through its focus, will have its corresponding reflected ray ___ to the ___

7. A _____ mirror is used as a rear view mirror in vehicles.

8. If an object is kept at infinity, in front of a concave mirror, an image is formed at the _____ of the mirror.

9. A convex mirror always forms a ___ and ___ image.

10. A ___ lens is used as a magnifying and glass.

11. A ray of light moving towards a mirror from an object is called an ____ ray.
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Answer 1

Answer:

Hope it helps

Explanation:

1. Light travels in a straight line.

2. The narrow path of light, represented by a straight line is called a ray of light.

3. A bundle of light rays coming from a broad source and converging at a point is called a beam of light.

4. The image formed by a plane mirror is as far behind the mirror, as the far is in front of it.

5. A concave lens in spectacles, helps people to see near objects clearly.

6. A ray of light, incident on a concave mirror, passing through its focus, will have its corresponding reflected ray parallel to the axis

7. A concave mirror is used as a rear view mirror in vehicles.

8. If an object is kept at infinity, in front of a concave mirror, an image is formed at the focus of the mirror.

9. A convex mirror always forms a virtual and upright image.

10. A convex lens is used as a magnifying and glass.

11. A ray of light moving towards a mirror from an object is called an incident ray.

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Answer 2

1. Straight
2. ray
3. converging
4. far, object
5. far
6. parallel, principal axis
7. convex
8. focus
9. virtual, erect
10. convex
11. incident

Explanation:

• Light travels in a Straight line. It has a rectilinear motion.

• The narrow path of light, represented by a straight line is called a ray of light. All the image formations in particle property of light are shown using ray of light.

• A bundle of light rays coming from a broad source and converging at a point is called a converging beam of light. Convex lens and concave mirror converges light rays.

• The image formed by a plane mirror is as far behind the mirror, as the object is in front of it. The distance of image formed from a plane mirror is same as the object distance from the mirror.

• A concave lens in spectacles, helps people to see far objects clearly. Concave lens is used for treating short-sightedness or myopia.

• A ray of light, incident on a concave mirror, passing through its focus, will have its corresponding reflected ray parallel to the principal axis. The concave mirror converges ray from infinity to a point on principal axis called focus and vice versa.

• A convex mirror is used as a rear view mirror in vehicles. Convex mirror forms virtual, erect and diminished images and so it is used as rear view mirrors.

• If an object is kept at infinity, in front of a concave mirror, an image is formed at the focus of the mirror. The concave mirror converges ray from infinity to a point on principal axis called focus and vice versa.

• A convex mirror always forms a virtual and erect image. Convex mirror forms virtual, erect and diminished images and so it is used as rear view mirrors.

• A convex lens is used as a magnifying and glass. It forms magnified images of objects nearer to it.

• A ray of light moving towards a mirror from an object is called an incident ray.