Direction ratios of line 1: (−3,2λ/7,2). Direction ratios of line 2: (−3λ/7,1,−5). Perpendicularity requires dot product zero: (−3)(−3λ/7)+(2λ/7)(1)+(2)(−5)=0, i.e. 9λ/7+2λ/7−10=0, so 11λ/7=10, giving λ=70/11.
If the cash equivalent of a perpetuity of Rs.1200 payable at end of each half year is Rs.96,000, the annual rate of interest compounded half yearly…
CUET UG 2023 — Mathematics Applied-Mathematics
2023mcqmedium
If the cash equivalent of a perpetuity of Rs.1200 payable at end of each half year is Rs.96,000, the annual rate of interest compounded half yearly is :
Official previous-year question
Held on 23 May 2023 · Verified 13 Jul 2026.
Options
- A
5%
- B
2.5%
- C
3%
- D
4.5%
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