To get light in visible region through L...

To get light in visible region through LED …….. Semiconductor is used.

silicon

germanium

gallium

tellurium

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS
KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos
SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS
KUMAR PRAKASHAN|Exercise Section-C: NCERT Exemplar Solution (Long Answer Type Questions)|10 Videos
SAMPLE QUESTION PAPER
KUMAR PRAKASHAN|Exercise PART-B SECTION-C|5 Videos
WAVE OPTICS
KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)|239 Videos

Similar Questions

Explore conceptually related problems

Semiconductors are used as

The wavelength of light in the visible region is about 390 nm for violet colour, about 550 nm (average wavelength) for yellowgreen colour and about 760 nm for red colour. (a) What are the energies of photons in (eV) at the (i) violet end, (ii) average wavelength, yellow-green colour, and (iii) red end of the visible spectrum? ("Take h "= 6.63xx10^(-34)" J s and 1 eV" = 1.6xx10^(-19)J.) (b) From which of the photosensitive materials with work functions listed in Table 11.1 and using the results of (i), (ii) and (iii) of (a), can you build a photoelectric device that operates with visible light?

The wavelength of light in the visible region is about 390 nm for violet colour ,about 550 nm (average wavelength) for yellow-green colour and about 760 nm for red colour. (a)What are the energies of photons in (eV) at the (i) violet end, (ii)average wavelength,yellow-green colour,and (iii) red end of the visible spectrum ? (Take h =6.63xx110^(-34)) js and 1 eV= 1.6xx10^(-19) J). (b)From which of the photosensitive material with work functions listed n Table 11.1 and using the results of (i),(ii) and (iii) of (a), can you build a photoelectric device that operates with visible light?

Light enters our eye through the .......

An electron hole pari is formed when light of maximum wavelength 6000 Å is incident on the semiconductor. What is the band gap energy of the semiconductor ? (h=6.62xx10^(-34)Js)

........ light, while passing through a prism, does not disperse.

For refractin of light through a prism

What is visible light ? Write various view on it.

KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs From .DARPAN. Based On Textbook)

When we use zener diode as a voltage regulator, its connection ……. (...
Text Solution
|
The heat produced per unit time, on passing electric current through a...
Text Solution
|
To get light in visible region through LED …….. Semiconductor is used.
Text Solution
|
Forward bias has to be provided for the ….. Semiconductor device to wo...
Text Solution
|
In the circuit shown in figure, if the diode forward voltage drop is 0...
Text Solution
|
What is the difference between cutaneous and pulmonary respiration ?
Text Solution
|
The circuit symbol of LED, p-n junction diode is …..
Text Solution
|
Which of the following is true ?
Text Solution
|
Which of the following in true for Golden rice ?
Text Solution
|
Truth table for the given circuit (See figure) is
Text Solution
|
Which of the following in true for Golden rice ?
Text Solution
|
Which gate does not require a p-n junction diode?
Text Solution
|
NAND gate is combination of ….. gate and …….. gate.
Text Solution
|
NOR gate is the combination of ….. Gate and …… gate.
Text Solution
|
….. NAND gate is required for OR gate.
Text Solution
|
……NOT gate is required for NAND gate.
Text Solution
|
Which of the following logic gate is an universal gate?
Text Solution
|
Which of the following logic gate is an universal gate?
Text Solution
|
Which of the following is true ?
Text Solution
|
You are given the circuits as shown in figure, which consist of NAND g...
Text Solution
|