The questions which follow consist of two statements labeled ‘A’ and ‘R’. Examine each statement carefully and decide if assertion ‘A’ and ‘R’ are individually correct. If so, then decide, whether reason ‘R’ is correct explanation of ‘A’. Select your answer using the codes given below.
Statement Code (i) Both ‘A’ and ‘R’ are correct and ‘R’ is the correct explanation of ‘A’ (a) (ii) Both ‘A’ and ‘R’ are correct but ‘R’ is not correct explanation of ‘A’ (b) (iii) ‘A’ is correct, but ‘R’ is incorrect (c) (iv) ‘A’ is incorrect, but ‘R’ is correct (d)
A: An ink pen when filled with ink on a high mountain starts leaking.
R: The air pressure on the high mountain is less than that in the plains.
The questions which follow consist of two statements labeled ‘A’ and ‘R’. Examine each statement carefully and decide if assertion ‘A’ and ‘R’ are individually correct. If so, then decide, whether reason ‘R’ is correct explanation of ‘A’. Select your answer using the codes given below.
| Statement | Code |
| (i) Both ‘A’ and ‘R’ are correct and ‘R’ is the correct explanation of ‘A’ | (a) |
| (ii) Both ‘A’ and ‘R’ are correct but ‘R’ is not correct explanation of ‘A’ | (b) |
| (iii) ‘A’ is correct, but ‘R’ is incorrect | (c) |
| (iv) ‘A’ is incorrect, but ‘R’ is correct | (d) |
A: An ink pen when filled with ink on a high mountain starts leaking.
R: The air pressure on the high mountain is less than that in the plains.
Explanation of Assertion:
1. Fountain pens (ink pens) start leaking at high altitudes because the pressure of air within the pen is higher than the pressure of air outside.
2. Hence, the assertion is correct.
Explanation of Reason :
1. Pressure at a point is caused due to the huge mass of air over it.
2. So when we make a point as we go higher, there is lesser air above it, thus air pressure decreases with an increase in elevation.
3. Therefore, The air pressure on the high mountain is less than that in the plains.
4. The reason is also correct.
Thus, the reason is the correct explanation of the assertion.
Hence, code (a) is the correct option.
Explanation of Assertion:
1. Fountain pens (ink pens) start leaking at high altitudes because the pressure of air within the pen is higher than the pressure of air outside.
2. Hence, the assertion is correct.
Explanation of Reason :
1. Pressure at a point is caused due to the huge mass of air over it.
2. So when we make a point as we go higher, there is lesser air above it, thus air pressure decreases with an increase in elevation.
3. Therefore, The air pressure on the high mountain is less than that in the plains.
4. The reason is also correct.
Thus, the reason is the correct explanation of the assertion.
Hence, code (a) is the correct option.
