# NCERT Class 11-Math's: Chapter –12 Introduction to Three Dimensional Geometry Part 10

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## Objective Type Questions

### Choose the Correct Answer from the Given Four Options Indicated Against Each of the Exercises from 22 (M.C.Q.)

**Question 22:**

The distance of point from the plane is

(A) 3 units

(B) 4 units

(C) 5 units

(D) 550

**Answer: (A)**

**Question 23:**

What is the length of foot of perpendicular drawn from the point on *y*-axis

(A)

(B)

(C)

(D) None of these

**Answer: (B)**

**Question 24:**

Distance of the point from the origin is

(A)

(B) 3

(C) 4

(D) 5

**Answer: (A)**

**Question 25:**

If the distance between the points and is , then the value of *a* is

(A)

(B)

(C)

(D) None of these

**Answer: (B)**

**Question 26:**

axis is the intersection of two planes

(A) and

(B) and

(C) and

(D) None of these

**Answer: (A)**

**Question 27:**

Equation of axis is considered as

(A) *x =* 0, *y* = 0

(B) *y =* 0, *z* = 0

(C) *z =* 0, *x* = 0

(D) None of these

**Answer: (B)**

**Question 28:**

The point lies in the

(A) First octant

(B) Seventh octant

(C) Second octant

(D) Eighth octant

**Answer: (B)**

**Question 29:**

A plane is parallel to plane so it is perpendicular to:

(A)

(B)

(C)

(D) None of these

**Answer: (A)**

**Question 30:**

The locus of a point for which , is

(A) Equation of *x*-axis

(B) Equation of *y-*axis

(C) Equation at *z*-axis

(D) None of these

**Answer: (A)**

**Question 31:**

The locus of a point for which is

(A)

(B)

(C)

(D) None of these

**Answer: (B)**