There are four different points on a plane such that no three are collinear. The number of distinct straight lines that can be drawn through them is?
A8
B4
C2
D6
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A beam of white light undergoes dispersion through a triangular glass prism forming a band of seven colours. Which of the statements is/are correct?
- a) The red-coloured component has minimum refractive index.
- (b) The violet-coloured component deviates the least.
- (c) All components of white light have same speed in glass.
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Which of the following statements is/are correct?
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