Question

Placement of light switches at a low level is ideal for which of the following people with special needs ?
(A) Deaf people
(B) Kids with disabilities
(C) People in wheelchair
(D) Old people

• A. (A), (B) and (D) only.
• B. (A), (C) and (D) only.
• C. (B), (C) and (D) only.
• D. (A), (B), and (C) only.

Hint:

In barrier-free design, the recommended height for electrical outlets is raised to $45 \text{ cm}$ and light switches are lowered to $90 \text{ cm}$ to keep them within the comfortable reach of wheelchair users.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Universal design (accessible design) focuses on creating living spaces and products that can be used by all people, including those with physical, sensory, or age-related limitations, without requiring special adaptations.

Step 2: Detailed Explanation:
Standard light switches are typically installed at a height of $120 \text{ to } 140 \text{ cm}$ from the floor.
While suitable for most adults, this height can present accessibility barriers for individuals with limited reach or mobility.
Lowering light switches to a height of $90 \text{ to } 100 \text{ cm}$ helps specific groups of users:
- (B) Kids with disabilities: Children with physical or cognitive challenges can easily reach lower switches without climbing on furniture, improving safety and independence. (True)
- (C) People in wheelchairs: Individuals sitting in wheelchairs have a lower physical reach. Low-level switches allow them to operate lights independently from a seated position. (True)
- (D) Old people: Many elderly individuals experience reduced shoulder mobility, arthritis, or balance issues. Lower switches minimize the need to stretch or reach upward, reducing discomfort and fall risks. (True)
- (A) Deaf people: Hearing impairment does not limit a person's physical height, arm movement, or reaching ability. Therefore, low-level switches are not a specific requirement for deaf individuals.
Thus, groups (B), (C), and (D) benefit directly from this modification.

Step 3: Final Answer:
The correct option is (B), (C), and (D) only, corresponding to option (C).