NCERT Class 10th Math Chapter 9 MCQ Question Answer and can take online test here.. CCL Chapter helps you in it.. NCERT Solution for Class 10 Maths Chapter 9 MCQ of Some Application of Trigonometry NCERT Solution for CBSE, HBSE, RBSE and Up Board and all other chapters of class 10 math.

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NCERT Class 10 Math Chapter 9 Some Application of Trigonometry MCQ Question Answer with Online test of Objective type Solution.

**Class 10 Math Chapter 9 MCQ Question Answer**

**1. A tower stands vertically on the ground. From a point on the ground which is 15m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 30° . Then the height of the tower is**

(A) 15√3

(B) 10√3

(C) 5√3

(D) 45√3

**Answer**

**Ans. (C) 5√3**

**2. The ratio of the length of a rod and its shadow is 1:√3. The angle of elevation of the sum is:**

(A) 90°

(B) 30°

(C) 60°

(D) 45°

**Answer**

**Ans. (B) 30°**

**3. The angles of elevation of the top of a tower from two points at a distance of 4m and 9m from the base of the tower and in the same straight line with it are complementary. Then the height of the tower is**

(A) 2m

(B) 4m

(C) 6m

(D) 8.625m

**Answer**

**Ans. (C) 6m**

**4. A boy is traveling from a point towards a tower. He travelled 2 unit distance when angle of elevation changes from 30° to 60°. Now how much more distance he should have to travel to reach exactly at the base of tower.**

(A) √3 unit

(B) 1 unit

(C) 0.5 unit

(D) √2 unit

**Answer**

**Ans. (B) 1 unit**

**5. A boy is traveling from a point towards a tower. He travelled 2 unit distance when angle of elevation changes from 30° to 60°. What is the height of tower?**

(A) √3 unit

(B) 1 unit

(C) 0.5 unit

(D) √2 unit

**Answer**

**Ans. (A) √3 unit**

**6. If the height of a vertical wall is 4m. A ladder is leaned against wall at the angle of depression 15°. Then the length of ladder is**

(A) 4.5√3m

(B) 5m

(C) 3m

(D) 4√3m

**Answer**

**Ans. (B) 5m**

**7. A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8m. Then the height of the tree is**

(A) 8√3m

(B) 16√3m

(C) 8√2m

(D) none of the above

**Answer**

**Ans. (A) 8√3m**

**8. The shadow of a tower standing on a level plane is found to be 40m longer when the sun’s altitude is 45°, than when it is 60°. The height of the tower is**

(A) 30(3 + √3) m

(B) 40(3 + √3) m

(C) 20(3 + √3) m

(D) 10(3 + √3) m

**Answer**

**Ans. (C) 20(3 + √3) m**