3D Geometry 3 Question 40

40. Distance between two parallel planes 2x+y+2z=8 and 4x+2y+4z+5=0 is

(a) 32

(b) 52

(c) 72

(d) 92

(2013 Main)

Show Answer

Answer:

Correct Answer: 40. (d)

Solution:

  1. Given planes are

2x+y+2z8=0 and 2x+y+2z+52=0

Distance between two planes

=|c1c2|a2+b2+c2=|85222+12+22|=21/23=72



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक