Page 223 - NCERT Science Class 10 English Medium
P. 223
A n s w e r s
Chapter 1
1. (i) 2. (d) 3. (a)
Chapter 2
1. (d) 2. (b) 3. (d) 4. (c)
Chapter 3
1. (d) 2. (c) 3. (a) 4. (c)
Chapter 4
1. (b) 2. (c) 3. (b)
Chapter 5
1. (c) 2. (a) 3. (d) 4. (b)
Chapter 6
1. (d) 2. (b) 3. (d)
Chapter 7
1. (b) 2. (c) 3. (d)
Chapter 8
1. (c)
Chapter 9
1. (d) 2. (d) 3. (b)
4. (a) 5. (d) 6. (c)
7. Distance less than 15 cm; virtual; Enlarged.
9. Yes
10. 16.7 cm from the lens on the other side; 3.3 cm, reduced; real, inverted.
11. 30 cm
12. 6.0 cm, behind the mirror; virtual, erect
13. m = 1 indicates that image formed by a plane mirror is of the same size as the object.
Further, the positive sign of m indicates that the image is virtual and erect.
14. 8.6 cm, behind the mirror; virtual, erect; 2.2 cm, reduced.
15. 54 cm on the object side; 14 cm, magnified; real, inverted.
16. –0.50 m; concave lens
17. + 0.67 m; converging lens
2024-25
