Physics
Which of the following property of sound is affected by change in air temperature?

Frequency
Amplitude
Wavelength
Intensity

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Physics
Which of the following events occurred first ?

Madame Marie Curie became the first woman Nobel Prize winner
Marconi first tranmitted a wireless signal
Albert Einstein propounded the General Theory of Relativity
Max Planck unveiled the Quantum Theory

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Physics
Rain drops fall from great height. Which among the following statements is true regarding it?

Their velocity increases and they fall with different velocity on the earth
They fall with same ultimate velocity
Their velocity increases and they fall with same velocity on the earth
They fall with that ultimate velocity, which are different for different droplets

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