2m फोकस दूरी वाले किसी अवतल लेंस की क्षमता ज्ञात कीजिए ।
A. +0.5D
B. -0.5D
C. +5D
D. -5D

In a /_\ A B C , A D is the bisector of /_A , meeting side B C at D . (i) If B D=2. 5 c m ,\ \ A B=5c m and A C=4. 2 c m , find D C . (ii) If B D=2c m ,\ \ A B=5c m and D C=3c m , find A C . (iii) If A B=3. 5 c m , A C=4. 2 c m and D C=2. 8 c m , find B D .

In a A B C , A D is the bisector of /_A , meeting side B C at D . If B D=2. 5 c m , A B=5c m and A C=4. 2 c m , find D C . (ii) If B D=2c m , A B=5c m and D C=3c m , find A C . (iii) If A B=3. 5 c m , A C=4. 2 c m and D C=2. 8 c m , find B D .

Construct a quadrilateral A B C D in which B C=4c m ,\ C A=5. 6 c m ,\ A D=4. 5 c m ,\ C D=5c m\ a n d\ B D=6. 5 c mdot

0-:3/5= (a)0 (b) 5/3 (c) 3/5 (d) -3/5

(1/5)^0 is equal to 0 (b) 1/5 (c) \ 1 (d) 5

In Fig. 5.10, if A C=B D , then prove that A B=C D .

In Fig. 5.10, if A C=B D , then prove that A B=C D .