Q. 294.3( 6 Votes )

How many types of no

Answer :

Non-optical aids include visual aids, tactual aids (using the sense of touch), auditory aids (using the sense of hearing) and electronic aids. With the help of visual aids, required size of words, suitable intensity of light and material at proper distances can be provided. Tactual aids including Braille writer, slate and stylus help the visually challenged persons in taking notes, reading and writing and in learning mathematics. Auditory aids include cassette, tape recorders, talking books and other such programs. Electronic aids such as talking calculators are also available for performing many computations. Closed circuit television, also an electronic aid, enlarges printed material with suitable contrast and illumination. Nowadays, use of audio CDs and voice boxes with the computers are also very helpful for listening and writing the desired text.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Lets Have a Faceoff with Light!!Quiz | Lets Have a Faceoff with Light!!Quiz | Lets Have a Faceoff with Light!!37 mins
Rapid fire quiz on LightRapid fire quiz on LightRapid fire quiz on Light39 mins
Quiz | Imp. Qs. on LightQuiz | Imp. Qs. on LightQuiz | Imp. Qs. on Light36 mins
Lakhmir Singh | LightLakhmir Singh | LightLakhmir Singh | Light45 mins
Quiz | Lets Revise LightQuiz | Lets Revise LightQuiz | Lets Revise Light29 mins
Quiz | KBC(Kaun Banega Champion) of LightQuiz | KBC(Kaun Banega Champion) of LightQuiz | KBC(Kaun Banega Champion) of Light29 mins
Can You Split White Light?Can You Split White Light?Can You Split White Light?41 mins
What are Spherical Mirrors?What are Spherical Mirrors?What are Spherical Mirrors?39 mins
Quiz | Discussion on Light With QuestionsQuiz | Discussion on Light With QuestionsQuiz | Discussion on Light With Questions34 mins
NCERT | Let's Discuss NCERT QuestionsNCERT | Let's Discuss NCERT QuestionsNCERT | Let's Discuss NCERT Questions40 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses