SOLUTIONS OF WORKSHEET FOR OPEN BOOK TEST, CH 15(LIGHT), CLASS 7

Multiple Choice Questions:

1. (a) always a straight line

2. (a) Plane mirror

3. (a) virtual and erect

4. (c) plane mirror and convex mirror

5. (a) Concave mirror only

6. (b) 1 m

7. (b) concave mirror or convex lens

8. (b) only a concave mirror

9. (c) both convex mirror and convex lens

10. (b) concave lens provided the image is smaller than object.

Match the following:

Column A	Column B
(i) Concave lens	(g) Thinner in the middle
(ii) Always virtual image	(h) Concave lens
(iii) Changing position of image	(a) Lateral inversion
(iv) Wax paper	(f) Translucent
(v) Image obtained on screen	(e) Real image
(vi) Convex mirror	(b) Reflecting surface is bulged out
(vii) Used by dentists	(c) Concave mirror
(viii) White light composed	(d) Seven colours

Fill in the blanks:

1.  irregular

2. normal,plane

3. reflection

4. lateral inversion

5. concave

6. plane

7. convex

8. concave

Choose the true and false statements from the following:

1. True

2. True

3. True

4. False

5. False

6. False

7. True