Question Discussion & Solution

Concept:

• Electroscope:
  • It is an early scientific instrument used to detect the presence of an electric charge on a body.
  • The first electroscope was a pivoted needle electroscope invented in the year 1600 by British Physicist William Gilbert.
  • It measures the charge that is dependent on the Coulomb electrostatic force that triggers the movement of the test charge.

Explanation:

• Seismograph:
  • It is an instrument that is used to detect and record earthquakes. generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not.
• Ammeter:
  • This is a meter that is used for measuring electric current. Current is the flow of electrons whose unit is ampere.
  • Hence the instrument which measures the flow of current in ampere is called as Ampere meter or ammeter.
  • the ideal ammeter has zero internal resistance.
• Voltmeter:
  • It is an instrument used for measuring the electric potential difference between two points in an electric circuit that is connected in parallel. 
  • It usually has high resistance so that it takes negligible current from the circuit.
•  An electroscope is a correct answer.

Hence, “21” will come next.

The correct answer is website.

• Collections of many web pages are called websites.

Key Points

• It can also be said that a website or site is a location where a lot of web pages are kept.
• It is a place connected to the Internet where information about an organization is available.
• The World Wide Web (www) which is a part of the Internet consists of websites.
• A website is a book printed on the Internet, through which information can be given about something or some goods or services can be sold.

The correct answer is 68 Assembly Constituencies.

• As of June 2020, the state of Himachal Pradesh has been divided into 68 Assembly Constituencies.

Key Points

• Himachal Pradesh:
  • In 1970, the Union Territory of Himachal Pradesh was elevated to the status of the state.
  • Its summer capital is Shimla.
  • Its winter capital is Dharamshala.
  • It has a total of 4 Lok Sabha seats and 3 Rajya Sabha seats.
  • Current Governor: Bandaru Dattatreya
  • Current Chief Minister: Jai Ram Thakur

We have drawn the figure according to the information given in the question,

(Let the turning points as shown in the figure)

Hence, she is now 15 km East from her starting point.