Assertion :In high latitude one sees colourful curtains of light hanging down from high altitude. Reason: The high energy charge particles from the sun are deflected to polar regions by the magnetic field of the earth.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The high energy charged particles from the sun (cosmic rays) collides with atoms & molecules of air when they enter in earth's atmosphere, causing that air to emit light. This light forms the aurora a curtain of light that hangs down to an altitude of about 100 km. Charged moving particle towards earth are caught by and spiral around the magnetic field lines of earth's magnetic field, entering the terrestrial atmosphere at high latitudes and producing aurora within the oval.
Hence , the correct option is $A$ .

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Similar questions

Q. Assertion :In high latitudes one sees colourful curtains of light hanging down from high altitudes. Reason: The high energy charged particles from the sun are deflected to polar regions by the magnetic field of the earth.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Boiling points of alcohols and ethers are high.
Reason (R) They can form intermolecular hydrogen-bonding.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

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