logo

CuriousTab

CuriousTab

Discussion


Home General Knowledge Inventions See What Others Are Saying!
  • Question
  • What Benjamin Franklin invented?


  • Options
  • A. Bifocal spectacles
  • B. Radio
  • C. Barometer
  • D. Hygrometer

  • Correct Answer
  • Bifocal spectacles 

    Explanation
    Invented in 1760.

    A list of Benjamin Franklin's inventions reveals a man of many talents and interests. It was the scientist in Ben that brought out the inventor. His natural curiosity about things and the way they work made him try to find ways to make them work better.

    Ben had poor vision and needed glasses to read. He got tired of constantly taking them off and putting them back on, so he decided to figure out a way to make his glasses let him see both near and far. He had two pairs of spectacles cut in half and put half of each lens in a single frame. Today, we call them bifocals.

  • More questions

    • 1. The obscuring of one celestial body by another, particularly that of the sun or a planetary satellite

    • Options
    • A. elliptic
    • B. ecliptic
    • C. eclipse
    • D. None of the above
    • Discuss
    • 2. First Indian to make a speech in Hindi before the UN General Assembly is

    • Options
    • A. Moraji Desai
    • B. A.B. Vajpayee
    • C. Lal Bahadur Shastri
    • D. Lal Krishna Advani
    • Discuss
    • 3. Ben kingsley is associated with which of the following fields?

    • Options
    • A. Politics
    • B. Social Service
    • C. Sports
    • D. Motion Pictures
    • Discuss
    • 4. The main aim of SAARC is

    • Options
    • A. Regional Cooperation
    • B. Internal affairs
    • C. Non-alignity
    • D. Peaceful Coexistence
    • Discuss
    • 5. Who has scored the most runs in a single First-class innings?

    • Options
    • A. Hanif Mohammad
    • B. Brian Lara
    • C. Sir Donald Bradman
    • D. Sachin Tendulkar
    • Discuss
    • 6. Which of the following is used as the logo of the World Wide Fund for Nature (WWF)?

    • Options
    • A. Deer
    • B. Panda
    • C. Camel
    • D. Lion
    • Discuss
    • 7. Which of the following is not a chief organ of the United Nations Organisations?

    • Options
    • A. International Labour Organisation
    • B. Security Council
    • C. International Court of Justice
    • D. General Assembly
    • Discuss
    • 8. Stars which appear single to the naked eye but are double when seen through a telescope are

    • Options
    • A. novas and supernovas
    • B. binaries
    • C. asteroids
    • D. quasars
    • Discuss
    • 9. Pick out the scalar quantity

    • Options
    • A. force
    • B. pressure
    • C. velocity
    • D. acceleration
    • Discuss
    • 10. The main crops of kharif are

    • Options
    • A. rice, jowar, bajra
    • B. ragi, maize
    • C. cotton, jute
    • D. All of the above
    • Discuss


    Comments

    There are no comments.

Enter a new Comment