Class 7 Science Light - Worksheet 05

Class 7 Science Light - Worksheet 05 is a fill in the blanks worksheet wherein you need to choose the correct option. The solution is provided below the worksheet.

Choose the correct option

1. Presence of light makes objects [ invisible / visible / disappear ].

2. Surfaces used in the study of light are [ polished / black painted / rough ].

3. A parallel beam of rays falling on a convex lens [ are diverged / remain parallel / are scattered / are converged ].

4. A parallel beam of rays falling on a concave lens [ are diverged / remain parallel / are scattered / are converged ].

5. Dispersion of white light is produced by a glass [ sphere / mirror / prism / lens ].

6. Which mirror will you use to get a real image equal to the size of the object. [ plane / none of these / convex / concave ].

7. Shaving mirrors are [ concave / plane / convex ].

8. A double convex air bubble in water will act like a [ convex mirror / convex lens / concave mirror / concave lens ].

9. What produces an image larger than the object? [ concave lens / plane mirror / convex mirror / concave mirror ].

10. The image which can be obtained on a screen is called [ erect / real / virtual / inverted ].

11. Sunlight consists of [ 7 / 3 / 1 / 5 ] colors.

12. The speed of light will be minimum while passing through [ water / air / vacuum / glass ].

Solution

1. Presence of light makes objects visible [ invisible / visible / disappear ].

2. Surfaces used in the study of light are polished [ polished / black painted / rough ].

3. A parallel beam of rays falling on a convex lens are converged [ are diverged / remain parallel / are scattered / are converged ].

4. A parallel beam of rays falling on a concave lens are diverged [ are diverged / remain parallel / are scattered / are converged ].

5. Dispersion of white light is produced by a glass prism [ sphere / mirror / prism / lens ].

6. Which mirror will you use to get a real image equal to the size of the object. plane [ plane / none of these / convex / concave ].

7. Shaving mirrors are concave [ concave / plane / convex ].

8. A double convex air bubble in water will act like a concave lens [ convex mirror / convex lens / concave mirror / concave lens ].

9. What produces an image larger than the object? concave mirror [ concave lens / plane mirror / convex mirror / concave mirror ].

10. The image which can be obtained on a screen is called real [ erect / real / virtual / inverted ].

11. Sunlight consists of 7 [ 7 / 3 / 1 / 5 ] colors.

12. The speed of light will be minimum while passing through glass [ water / air / vacuum / glass ].