Which of the following is/are not true f...

Which of the following is/are not true for `x-`rays?

Wavelength of continuous x-rays does not depends on potential difference

Wavelength of discreate x-rays does not depends on potential difference

Discrete x-rays have energy of the order of MeV

Continuous x-rays have energy of the order of KeV

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The correct Answer is:

A, C, D

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Which of the following are true ?

A polar satellite goes around the earth's pole in north-south direction.

A geostationary satellite goes around the earth in east-west direction.

A geostationary satellite goes around the earth in west-east direction.

A polar satellite goes around the earth east-west direction.

` 3^(@)` carbocation is formed by the loss of a water molecule from the oxonium ion. This step is fast.

`3^(@)` carbocation reacts with `Cl^(-)` rapidly and forms chloro alkane.

Tertiary alcohol is converted in to an ion through protonation by `H^(+)` of acid is slow step.

none

g is less at the earth's surface than at a height above it or a depth below it.

g is same at all places on the surface of the earth

g has its maximum value at the equator .

g is greater at the poles than at the equator