CTET Solved Paper - UTET September 2013 Paper2

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107. The refractive indices of kerosene oil, turpentine oil and water are 1.44, 1.47 and 1.33 respectively. In which of these materials light, travels fastest?

  • Option : C
  • Explanation : (C) Speed of light in a medium,

    speed of light in vaccum and!l is the refractive index of respective medium. Thus, smaller the refractive index higher will be the speed of light. So, from water having least refractive index 1.33. light will travel faster
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108.

Choose the correct option of human body parts with its secreted juice

 A. Stomach  1. Pancreatic juice
 B. Liver  2. Gastric Juice
 C. Pancreas  3. Bile Juice
 D. Small intestine  4. Intestinal Juice

Codes

A B C D

  • Option : B
  • Explanation : (B) Stomach secretes gastric juice, liver produce bile juice, Pancreas secrete pancreatic juice and small intestine secrete intestinal juice. So, option (B) is correct
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110. A cyclist moves from a certain point X and goes round a circle of radius r and reaches at Y. The displacement of cyclist will be

  • Option : C
  • Explanation : (C) The cyclist covers the semicircular path of radius r. We know that displacement is the shortest distance between two points. For a semicircle shortest path is its diameter. So displacement = 2 r
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