SEBA Class 7 Science Important Chapter 15 Light

SEBA Class 7 Science Important Chapter 15 Light Solutions English Medium As Per New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 General Science Additional Solutions and select need one. SCERT Important Solutions For Class 7 General Science Download PDF. Important Notes for Class 7 Science SCERT.

SEBA Class 7 Science Important Chapter 15 Light

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 7 Science Additional Question Answer are part of All Subject Solutions. Here we have given SCERT Class 7 General Science Important Notes for All Chapters, You can practice these here.

Light

Chapter: 15

IMPORTANT QUESTION ANSWER

A. Very Short Type Questions & Answers:

1. What happens when light strikes a shiny surface?

Ans: When light strikes a shiny surface, it gets reflected and changes direction.

2. What is the nature of the image formed by a plane mirror?

Ans: The image formed by a plane mirror is upright, of the same size, and cannot be projected onto a screen.

3. What are concave mirrors used for?

Ans: Concave mirrors are used by doctors for examining eyes, ears, nose, and throat, and by dentists for magnifying images of teeth.

4. Why do we see a rainbow after rain?

Ans: A rainbow is seen after rain due to sunlight passing through water droplets, splitting into different colors.

5. What is the difference between a convex and concave mirror?

Ans: A convex mirror always forms smaller, virtual images, while a concave mirror can form both real and virtual images, and may vary in size.

6. What type of mirror is used as a side mirror in vehicles?

Ans: Convex mirrors are used as side mirrors in vehicles because they show a wider area.

7. What is the function of a magnifying glass?

Ans: A magnifying glass, which is a convex lens, is used to magnify small objects or text.

8. Why does an image in a plane mirror appear reversed?

Ans: The image in a plane mirror appears reversed because only the left and right sides are swapped, not the top and bottom.

9. What is the effect of moving an object closer to a concave mirror?

Ans: Moving an object closer to a concave mirror causes the image to become larger and possibly virtual.

10. What is the significance of a prism in relation to sunlight?

Ans: A prism splits sunlight into seven colors, showing that sunlight is made of multiple colors.

B. Fill in the Blanks:

1. Light travels in __________ lines.

Ans: Straight.

2. The surface of __________ can also act like a mirror and reflect light.

Ans: Water.

3. A plane mirror forms an image that is __________ and of the __________ size as the object.

Ans: Erect, same.

4. Concave mirrors are used by __________ for examining teeth.

Ans: Dentists.

5. Sunlight consists of __________ colors, which can be seen in a rainbow.

Ans: Seven.