Light-Visually Challenged Human (CBSE Class-8 Science): Questions 1 - 3 of 3

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Question number: 1

» Light » Visually Challenged Human » Non-Optical Aids and Optical Aids

MCQ▾

Question

Non-optical aids include:

Choices

Choice (4) Response
a.

Electronic aids

b.

Touch or tactual aids

c.

Auditory aids

d. All a. , b. and c. are correct

Question number: 2

» Light » Visually Challenged Human » Braille System

MCQ▾

Question

One of the best known and widely used aids by the visually challenged is the:

Choices

Choice (4) Response
a.

Regular Reflection

b.

Incident ray

c.

Braille System

d. All of the above

Question number: 3

» Light » Visually Challenged Human » Non-Optical Aids and Optical Aids

MCQ▾

Question

Optical aids include:

Choices

Choice (4) Response
a.

Tinted lenses

b.

Bifocal lenses

c.

Contact lenses

d. All a. , b. and c. are correct

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