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Answer :

LED is better than LCD. LED have lots of advantages and LED have long span .

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Description : Give any two applications of LED and LCD each. 

Answer : Two applications of LED (1) As an indicators and small display. (2) In digital thermometer, pulse rate meter. (3) In patient monitoring. Two applications of LCD (1) In video games (2) In calculators (3) In test equipments (4) In gauges and counters

Description : Differentiate between LCD and LED TV.

Answer : Differentiate between LCD and LED TV.

Description : Liquid Crystal Display (LCD)

Answer : Liquid Crystal Display (LCD) LCD stands for Liquid Crystal Display. It is a flat panel electronic display device which uses light modulating properties of liquid crystal. ... pixel and passive pixel display do not consist of switch at each pixel.

Description : Which material is used for manufacturing of following LED ? (i) Infrared LED (ii) Red or Green LED (ii) Red or Yellow LED (iv) Blue LED

Answer : Infrared LED : Aluminum gallium arsenide (AlGaAs) Red or Green LED: Indium gallium nitride (InGaN), Aluminum gallium arsenide (AlGaAs) Red or Yellow LED : Aluminum gallium indium phosphide (AlGaInP), Aluminum gallium arsenide (AlGaAs) Blue LED : Indium gallium nitride (InGaN)

Description : At a given price increase in quantity supplied can be possible if …………… (a) There is apprehension of sharp fall in prices in future ; (b) Refund or subsidy of statutory levy in cash is given by the Government; (c) Improvement in technology led to cost saving ; (d) All the three

Answer : ; (d) All the three