Concept:
The Himalayas are divided into different regional sections based on geographical location and physical characteristics.
Step 1: Examine Assertion A.
Assertion A states that the Eastern Himalayas extend from Kumaon westwards.
This statement is incorrect.
The Eastern Himalayas actually extend:
\[
\text{from Nepal eastwards}
\]
covering areas such as:
• Sikkim
• Bhutan
• Arunachal Pradesh
Kumaon lies in the Central Himalayan region, not the Eastern Himalayas.
Thus, Assertion A is false.
Step 2: Examine Reason R.
The Eastern Himalayas receive:
• Heavy rainfall
• Comparatively less snowfall
• Fewer glaciers compared to Western Himalayas
This is due to the strong influence of monsoon winds and relatively lower altitude in some regions.
Therefore, Reason R is correct.
Step 3: Determine the relationship between A and R.
Since:
• Assertion A is incorrect
• Reason R is correct
the correct option is:
\[
\text{A is not correct but R is correct}
\]
Step 4: Conclusion.
Hence, the correct answer is:
\[
\boxed{\text{A is not correct but R is correct}}
\]