Question Discussion & Solution

The correct answer is ​Laser Printer.

Important Points

• Hard copy output devices
  • Hard copy output devices are devices that provide output on printed paper or other permanent media that is human readable. 
  • Examples of devices that produce hard copy are printers, plotters.

Key Points

• Laser printers 
  • Laser printers are machines that melt toner powder onto paper to create a print. 
  • Laser printers are more expensive than inkjet printers upfront and use pricier toner cartridges.
  • It is a more economical option in the long run with its overall lower cost per page.
  • Laser printers have faster print speeds.
  • A semiconductor diode laser is currently used in laser printers as the light source.

Additional Information

• Visual Display Terminal
  • The term VDT refers to a type of equipment for visual display, such as computer screens.
• Projector
  • ​A projector or image projector is an optical device that projects an image onto a surface, commonly a projection screen.
• Monitor
  • ​A computer monitor is an output device that displays information in pictorial form.
  • A monitor usually comprises the visual display, circuitry and power supply.

The correct answer is 22 February 2021.

• Under the vaccination program in Rajasthan, the first phase of Intensified Mission Indradhanush-3 started from 22 February 2021.

Key Points

• First phase of intensive mission Indradhanush-3:
  • Medical and Health Minister Dr. Raghu Sharma launched this special campaign of vaccination from Bhilwara district.
  • According to the instructions of the Union Health Ministry, this campaign will be conducted for 15 days in two phases and the related vaccines will be given free of cost to the children and pregnant women who are deprived of regular vaccination.
    • In the first phase, 24 districts of the state have been included. A total of 3,963 vaccination sessions will be conducted in these.
    • A target has been set to immunize 23,980 children from birth to 2 years of age and 6,268 pregnant women through the relevant vaccines.

Concept:

In magnetic compass, a magnetic needle which always directs the North-South direction.

• The compass is an instrument used for navigation and orientation that indicates position relative to the geographical directions (or points).
• Typically, a diagram called a compass rose displays the directions to the north, south, east, and west on the compass face.

Elements of Earth's Magnetic Field:

• The magnitude and direction of the magnetic field of the earth at a place are completely given by certain quantities known as magnetic elements.

Explanation:

Earth has its own magnetic field whose poles are

• Magnetic North is in Geographical South pole.
• Magnetic South is in Geographical North Pole.
• A compass needle is a bar magnet with a pointed north pole. It is attracted to the magnetic south pole.
• Hence magnetic needle points in North Direction (Magnetic South). 

Rickshaw, bus and train are the means of transport.

Mobile and radio are the means of communication, so out of the given options only letter is a mean of communication.