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Physics
Multiple Choice Question with Two or More Choices Correct In which of the following experiments is the interference due to the division of amplitude? (a) Young' s double slit experiment (b) Newton' s rings experiment (c) Fresnel' s biprism experiment (d) Experiment demonstrating colours of thin films
Chemistry
True or False : The sulphonation reaction involving benzene is a reversible reaction.
Mathematics
An anti-aircraft gun can take a maximum of four shots at an enemy plane moving away from it. The probabilities of hitting the plane at the first, second, third and fourth shot are 0.4, 0.3, 0.2 and 0.1 respectively. What is the probability that the gun hits the plane ?