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  • Question
  • A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by


  • Options
  • A. decreasing the radius of the capillary tube
  • B. increasing the radius of the capillary tube
  • C. increasing the height of water in the vessel
  • D. None of these

  • Correct Answer
  • decreasing the radius of the capillary tube 

    Explanation

    The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to (balances) the upward force due to surface tension. So it is clear that if the the bore (radius) to the tube is decreased, the height of the water column in it must be greater.  So, (a) is correct.


  • More questions

    • 1. Micro Credit or Micro Finance is a novel approch to banking with the poor. In this approach bank credit is extended to the poor through:

    • Options
    • A. Self Help Groups
    • B. Anganwadi
    • C. Co- operative Credit Societies
    • D. Reserve Bank of India
    • Discuss
    • 2. The Sunga ruler Bhaga erected a monolithic 'Garuda' at

    • Options
    • A. Varanasi
    • B. Besnagar
    • C. Rajagriha
    • D. Pataliputra
    • Discuss
    • 3. Who was/were the 10th century composer(s) of the Nalayira Divya Prabandham?

    • Options
    • A. Alvars
    • B. Nayanars
    • C. Appar
    • D. Sambandar
    • Discuss
    • 4. The First ruler of the Satavahanas was

    • Options
    • A. Simuka
    • B. Govinda
    • C. Sri Satakarni
    • D. Nahapana
    • Discuss
    • 5. Which one of the following statements about Buddhist Stupas in India is not correct?

    • Options
    • A. Ashoka played an important role in popularizing the Stupa cult.
    • B. They were repositories of relics of Buddha and other monks.
    • C. They were located in rural areas.
    • D. They were located close to trade routes.
    • Discuss
    • 6. Who of the following was the personal physician of Kanishka and also the author of a famous treatise on the Indian system of medicine

    • Options
    • A. Charaka
    • B. Susruta
    • C. Nagarjuna
    • D. Jevaka
    • Discuss
    • 7. Consider the following statements about Indo-Tibetan Border Police (ITBP) : 1. ITBP was raised in 1962. 2. ITBP is basicsdly a mountain trained force. 3. ITBP replaced Assam Rifles in Sikkim and Arunachal Pradesh in 2004-2005 for border gusirding duly. 4. ITBP presently has 52 service battalions.Which of the statements given above are correct?

    • Options
    • A. 1, 2 and 4 only
    • B. 3 and 4 only
    • C. 1, 2, 3 and 4
    • D. 1, 2 and 3 only
    • Discuss
    • 8. Two most important acts and rituals associated with the vedic marriage system was/were

    • Options
    • A. Pani-Grahana
    • B. Sapta-Padi
    • C. Marriage Vows
    • D. Both (a) and (b)
    • Discuss
    • 9. Who deciphered the Brahmi and Kharoshthi scripts?

    • Options
    • A. Piyadassi
    • B. Colin Mackenzie
    • C. Alexander Cunningham
    • D. James Prinsep
    • Discuss
    • 10. The first Buddhist Council was held in which of the following cities

    • Options
    • A. Nalanda
    • B. Gaya
    • C. Rajgriha
    • D. Bodh Gaya
    • Discuss


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