Question

Match List-I with List-II.

List - I		List - II
A.	Diode Laser	I.	Nitinol
B.	Liquid Crystal Display	II.	Quartz
C.	Piezoelectric Material	III.	Optical communication
D.	Shape Memory Alloy	IV.	Display device

• A. A-III, B-IV, C-II, D-I
• B. A-II, B-I, C-IV, D-III
• C. A-IV, B-III, C-I, D-II
• D. A-I, B-II, C-III, D-IV

Hint:

Nitinol is a shape memory alloy and quartz is a common piezoelectric material.

Answer 1

The Correct Option is A

Concept:
Functional materials are used in different devices according to their physical properties such as optical emission, display response, piezoelectric response and shape memory effect.

Step 1: Diode laser.
A diode laser is widely used in optical communication because it produces coherent light suitable for optical fibre transmission. \[ A\rightarrow III \]

Step 2: Liquid crystal display.
Liquid crystal display is a common display device used in screens and electronic displays. \[ B\rightarrow IV \]

Step 3: Piezoelectric material.
Quartz is a well-known piezoelectric material. It produces electric polarization when mechanical stress is applied. \[ C\rightarrow II \]

Step 4: Shape memory alloy.
Nitinol is a nickel-titanium alloy and is the most common example of shape memory alloy. \[ D\rightarrow I \] Therefore: \[ A-III,\ B-IV,\ C-II,\ D-I \] \[ \therefore \text{Correct Answer is (A)} \]