Questions asked by sibi

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• Prove that #(cosA - sinA + 1)/(cosA + sinA - 1) = cscA + cotA# ?
  
• PROVE THAT : [sinA /1-cosA - 1-cosA/sinA ][cosA/1+sinA + 1+sinA/cosA] = 4cosecA.?
  
• What are the allotropes of carbon ?
  
• What is the history of VIETNAM ?
  
• Where the image will be formed in a concave mirror if the object is between pole and focus of the mirror ?
  
• What will happen to the focal length of convex lens which is placed inside water ?
  
• Can the acceleration due to gravity(g) can be 10.2 in experiment(simple pendulum)?
  
• Why should gymnosperms (pine) show xeric adaptation when they grow in higher altitudes ?
  
• How to use this website effectively ?
  
• What are the advantages and disadvantages of SOCRATIC?
  
• What is radius of gyration?
  
• What is the orbit of moon around sun ?
  
• Why light does not have mass ?
  
• Why is the light affected by gravity if photons are massless ?
  
• How does light have momentum , even if they don't have mass ?