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TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

Physics MCQs - TG EAMCET

TG EAMCET Physics MCQs (Questions 141-150)

141. Which of the following is the correct classification of materials based on conductivity?

a) Insulators, conductors, semiconductors
b) Conductors, metals, insulators
c) Metals, insulators, resistors
d) Insulators, metals, conductors

Answer: a) Insulators, conductors, semiconductors

142. What is the energy band theory used to explain in solids?

a) The flow of electricity
b) The heat conduction
c) The type of bonding
d) The electrical conductivity of materials

Answer: d) The electrical conductivity of materials

143. Which of the following semiconductors is created by doping with elements such as boron or gallium?

a) Intrinsic semiconductor
b) n-type semiconductor
c) p-type semiconductor
d) Superconductors

Answer: c) p-type semiconductor

144. In a p-n junction, the region where free electrons and holes combine is known as:

a) Depletion region
b) Conducting region
c) Neutral region
d) Conduction band

Answer: a) Depletion region

145. What is the main application of a Zener diode?

a) Amplification
b) Voltage regulation
c) Rectification
d) Signal modulation

Answer: b) Voltage regulation

146. Which device is used to convert light energy into electrical energy?

a) Solar cell
b) Photodiode
c) LED
d) Phototransistor

Answer: a) Solar cell

147. Which transistor configuration is commonly used as an amplifier?

a) Common collector
b) Common emitter
c) Common base
d) Common drain

Answer: b) Common emitter

148. Which of the following logic gates produces an output of 1 only when at least one of its inputs is 0?

a) AND gate
b) NAND gate
c) NOR gate
d) OR gate

Answer: b) NAND gate

149. Which type of modulation is used to increase the amplitude of a carrier wave to transmit information?

a) Frequency modulation
b) Amplitude modulation
c) Phase modulation
d) Pulse modulation

Answer: b) Amplitude modulation

150. What is the term for the transmission of signals through the Earth's surface?

a) Sky waves
b) Ground waves
c) Space waves
d) Radio waves

Answer: b) Ground waves

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