MATRIC • FSC • NTS • ETEA • CSS • PMS etc MCQs Learn, Practice, Prepare, Succeed! Prepare Today, Succeed Tomorrow!

Q: Total internal reflection is used in?

A) Optical fibers

B) Electric wires

C) Radio waves

D) Satellites

Q: Device to interact with computer?

A) Hardware

B) OS

C) Application

D) Program

Q: Storage device with no moving parts?

A) Flash drive

B) CD/DVD

C) Hard disk

D) Floppy

Q: Least used storage device today?

A) Floppy

B) CD/DVD

C) Hard disk

D) Flash drive

Q: Telephone uses signal transmission through?

A) Electric wires

B) Optical fiber

C) Electromagnetic waves

D) All

Q: The components of information and communication systems are humans hardware software procedures and ___

A) Computers

B) Fields

C) Data/Information

D) Signals

Q: Electric or electromagnetic representations of data or information is termed as

A) Computer

B) Signal

C) Transmission

D) Software

Q: The phenomenon of total internal reflection is used in transmission of signal through

A) Electric wires

B) Optical fibers

C) Electromagnetic waves

D) Radio

Q: Electrical conductor or system of conductors used either for radiating electromagnetic energy or for collecting electromagnetic energy is

A) Antenna

B) Satellite

C) Repeater

D) Signal

Q: Software that allows users to interact with the computer system is

A) Hardware

B) Application

C) Operating System

D) None of these

Q: Which of the following information storage device has no moving parts to store and retrieve information

A) CD/DVD

B) Hard Drive

C) Flash drive

D) Floppy

Q: Which of the following information storage device is least used these days

A) CD/DVD

B) Hard Drive

C) Flash drive

D) Floppy

Q: Telephone communication is the example of transmission of signals through

A) Electric wires

B) Optical fibres

C) Electromagnetic waves

D) All

Q: What is the number of neutrons in plutonium-242/92 PU?

A) 92

B) 142

C) 150

D) 242

Q: Which one or more of the three decay processes (α β or γ) results in a new element?

A) Only α

B) Only β

C) Only γ

D) α AND β

Q: What type of nuclear decay leaves the number of protons and neutrons unchanged?

A) Alpha decay

B) Beta decay

C) Gamma decay

D) Both A & B

Q: What type of nuclear decay most often produces the greatest mass and charge loss?

A) Alpha decay

B) Beta decay

C) Gamma decay

D) Both B & C

Q: Radium-226 decays by emitting an alpha particle. What is the daughter nucleus?

A) Rd

B) Rn

C) Bi

D) Pb

Q: ³⁹Ar is an isotope with a half-life of 269 yr. It will reduce to half in?

A) 134.5 min

B) 134.5 years

C) 269 min

D) 269 years

Q: A sample starts with 1000 radioactive atoms. How many half-lives have elapsed when 750 atoms have decayed?

A) 0.25

B) 1.5

C) 2

D) 2.5