Q89.If the distance between planes, 4x −2y −4z + 1 = 0 and 4x −2y −4z + d = 0 is 7 , then d is: (1) 41 or −42 (2) 42 or −43 (3) −41 or 43 (4) −42 or 44
What This Question Tests
This question is a direct application of the formula for the distance between two parallel planes, requiring the correct substitution of coefficients and constants.
Concepts Tested
Formulas Used
Distance between parallel planes Ax+By+Cz+D1=0 and Ax+By+Cz+D2=0 is |D1-D2| / sqrt(A²+B²+C²)
📚 NCERT Sections This Tests
2.1 — Two Charges 5 × 10–8 C And –3 × 10–8 C Are Located 16 Cm Apart. At
Physics Class 11 · Chapter 2
2.1 Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
2.5 — A Parallel Plate Capacitor With Air Between The Plates Has A
Physics Class 11 · Chapter 2
2.5 A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1pF = 10–12 F). What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6?
2.3 — Two Charges 2 Mc And –2 Mc Are Placed At Points A And B 6 Cm
Physics Class 11 · Chapter 2
2.3 Two charges 2 mC and –2 mC are placed at points A and B 6 cm apart. (a) Identify an equipotential surface of the system. (b) What is the direction of the electric field at every point on this surface?
📋 Question Details
- Chapter
- 3D Geometry
- Topic
- Planes in 3D Space
- Year
- 2014
- Shift
- 12 Apr Online
- Q Number
- Q89
- Type
- MCQ
- NCERT Ref
- Class 12 Mathematics Ch 11: Three Dimensional Geometry
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