Question

a concave mirror of focal length 20cm forms an virtual image having twice the size of object .the position of the object is at​

Answer 1

Answer:

4 A concave mirror of focal length 20 cm forms an image twice the size of the object. For the virtual position of the object, the position of the object will be at: (a) 25 cm.

Step-by-step explanation:

this is  your  answer

Answer 2

Step-by-step explanation:

Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.