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Physics

General Knowledge on Physics

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)
121. Light waves projected on oil surface show seven colours due to the phenomenon of
122. The principle of cleaning by soap is
123. What is the first artificial satellite to orbit Earth?
124. What would happened if the earth had no atmosphere?
125. Which of the following statement is an example of atmospheric refraction?
126. The splitting up of white light into seven colors on passing through a transparent medium like a glass prism is called as:
127. White light is a mixture of how many colours?
128. Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
129. Mercury is commonly used as a thermometric fluid rather than water because
  • A. specific heat of mercury is less than water
  • B. specific heat of mercury is more than water
  • C. mercury has greater visibility than water
  • D. density of mercury is more than the water
  • Check Answer | Discussion
130. Light from the Sun reaches us in nearly

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