Question

a concave mirror forms An erect image 3 cm long of an object 1 cm long placed 5 cm from the mirror a) calculate the magnification of the image
b) how far away from the mirror is the image formed c)calculate its focal length (graphically)
d) how far away from the mirror must the object be moved to obtain a real inverted image double the size of the object



plz help me its urgent ​

Answer 1

Answer:

B} option will be the answer to your question

Explanation:

It's far away from the mirror

Answer 2

Answer:

1. 3 cm

2. 15cm

3. 7.5cm

4. 11.25 cm

Explanation:

3. U =3cm

V=5cm

F=?

1/f=1/u+1/v

1/f =1/3+1/5

1/f= 5-3/15

=2/15

=7.5 cm

2. U×v=3 ×5=15cm