Chapter 9 Some Applications of Trigonometry- MCQ Online Test 3 Class 10 Maths

1. A boy is flying a kite, the string of the kite makes an angle of 30° with the ground. If the height of the kite is 18m, then find the length of the string?
a. 15m
b. 30m
c. 36m
d.12m
2. If the length of a shadow of a tower is increasing, then find the angle of elevation of the sun?
a. Increasing
b. Decreasing
c. Stable
d. None of these
3. An electric pole is tied from the top to a point (some distance away from the base) on the ground using a string. The ratio of the height of pole to the string is√3: 2, then find the angle of elevation of the top from the point on the ground?
a. 10∘
b. 20∘
c. 50∘
d. 60∘
4. A circus artist is climbing a long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. The ratio of the height of the pole to the length of the string is 1:√2. Find the angle made by the rope with the ground level?
a. 5∘
b. 45∘
c. 50∘
d. 65∘
5. A ladder 12m long just reaches the top of a vertical wall. If the ladder makes an angle of 45° with the wall, then find the height of the wall?
a. 2√2
b. 6√2
c. 3√2
d. 4√2
6. A pole of height 60m has a shadow of length 20√3m at a particular instant of time. Find the angle of elevation of the sun at this point of time?
a. 10°
b. 20°
c. 50°
d. 60°
7. A boy is flying a kite, the string of the kite makes an angle of 30° with the ground. If the height of the kite is 18m, then find the length of the string?
A. 15m
B. 20m
C. 36m
D. 40m
8. A 1.2m tall boy stands at a distance of 2.4m from a lamp post and casts a shadow of 3.6m on the ground. Find the height of the lamp post?
a. 4m
b. 2m
c. 5m
d. 6m
9. The angle of elevation and the angle of depression from an object on the ground to an object in the air are related as
a. Greater than
b. Less than
c. Equal
d. None of these
10. _______ is an instrument for measuring the angles of elevation and depression.
a. Theodolite
b. Telescope
c. Periscope
d. Microscope

Chapter - 9 Some Applications of Trigonometry Quiz-3| Math Class 10th

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