irosha
Answered

At Westonci.ca, we connect you with the best answers from a community of experienced and knowledgeable individuals. Connect with a community of experts ready to provide precise solutions to your questions on our user-friendly Q&A platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Clear umbra can be obtained by .................................

what is the word come to this blank?​


Sagot :

Clear umbra can be obtained when the electric torch is kept at a considerable distance from the ball . So the light source should be kept far from the object to obtain a clear and sharp umbra.