Physics · JEE

Important Questions: I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator for JEE

8+ syllabus-aligned questions available

Quick answer

The most important I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator questions for JEE cover conceptual traps, standard results, and numerical patterns from I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator. Goodmarks provides 8+ high-yield MCQs with full solutions.

Focus on what matters most. These important I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator questions cover high-weightage concepts from I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator — the topics JEE repeats every year.

Syllabus context

Part of Electronic Devices in JEE Main Physics.

Free sample questions

Attempt 8 free MCQs for I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator. Unlock the full bank with Pro.

Unlock full bank

Q1PhysicsUnit 19: Electronic Devices

The colour of light emitted by an LED depends on

Q2PhysicsUnit 19: Electronic Devices

Figure shown a DC voltage regulator circuit, with a Zener diode of breakdown voltage

=6 V .

If the unregulated input voltage varies between

10 V

16 V

then what is the maximum Zener current?

Q3PhysicsUnit 19: Electronic Devices

The operation of a solar cell requires:

Q4PhysicsUnit 19: Electronic Devices

Photodiode is a device

Q5PhysicsUnit 19: Electronic Devices

Assertion Photodiode and solar cell work on same mechanism. Reason Area is large for solar cell.

Q6PhysicsUnit 19: Electronic Devices

The attached figure shows the characteristics of:

Q7PhysicsUnit 19: Electronic Devices

A 5 V zener diode is used to regulate the voltage across load resistor

\boldsymbol{R}_{L}

and the input voltage varies in between

10 \mathrm{V}

15 \mathrm{V} .

The load current also varies from 5

\mathrm{mA}

50 \mathrm{mA}

. Find the value of series resistance R. Given,

\boldsymbol{I}_{Z}(\boldsymbol{m} \boldsymbol{i} \boldsymbol{n})=\boldsymbol{2} \boldsymbol{0} \boldsymbol{m} \boldsymbol{A}

Q8PhysicsUnit 19: Electronic Devices

The typical operating current for a lightemitting diode is approximately:

Want unlimited I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator practice?

Pro unlocks the full question bank, topic filters, and attempt history.

Get started free View Pro plans

Frequently asked questions

What makes a I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Electronic Devices are high-weightage?

Key areas include I-V characteristics of LED, the photodiode, solar cell, Zener diode, Zener diode as a voltage regulator. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.