Physics
Which of the following is an example of continous emission spectrum?

None
Spectrum of an oil frame
Spectrum of a water
Both

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Physics
What is a neuron ?

Basic unit of energy
The anti-particle of neutron
Basic unit of nervous system
Particle released during radioactivity

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Physics
The bats can fly in the dark because

They generate flashes of light
They can see the objects in darkness
They generate ultrasonic sound waves
They have weak legs and are likely to be attacked by predators

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