Which one of the following is true in ph...

Which one of the following is true in photoelectric emission

Photoelectric current is directly propotional to the amplitude of light of a given frequency

Photoelectric current is directly proportional to the intencsity of light of a given frequency at moderate intensities.

Above the threshold frequency, the maximum K.E. of photoelectrons is inversely proportional to the frequency of incident light

The threshold frequency depends upon wavelength of incident light.

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Which one of the following is a true fish?

Silver fish

Flying fish

Crayfish

Whale

For first order reaction, straight-line graph of log C versus t is obtained, slope = `-k//2.303`

A plot of log k vs 1`//`T gives a straight-line graph for which slope = `-E_a//2.303R`.

For third order reaction, the product of `t_(1//2)` and initial concentration (a) is constant.

Units of k for the first order reaction are independent of concentration units.

`A - B sube A`

`B' - A' sube A`

`A sube A - B`

`A nn B' sube A`