a) 31 cm b) 24cm c) 25 cm d) 24.5 cm Answer: c Explanation: ...
View QuestionThere is a tree between houses of A and B. If the tree leans on A’s House, the tree top rests on his window which is 12 m from ground. If the tree leans on B’s House, the tree top rests on his window which is 9 m from ground. If the height of the tree is 15 m, what is distance between A’s and B’s house?
a) 21 m b) 25 m c) 16 m d) 12 m Answer: a Explanation: ...
View QuestionShadow of a man is 1/√3 times the height of the man. What will be the sun’s angle of elevation?
Shadow of a man is $$\frac{1}{{\sqrt 3 }}$$ times the height of the man. What will be the ...
View QuestionTwo houses are in front of each other. Both have chimneys on their top. The line joining the chimneys makes an angle of 45° with the ground. How far are the houses from each other if one house is 25m and other is 10m in height?
a) 18 m b) 12 m c) 7.5 m d) 15 m Answer: d Explanation: ...
View QuestionA tree breaks and falls to the ground such that its upper part is still partially attached to its stem. At what height did it break, if the original height of the tree was 24 cm and it makes an angle of 30° with the ground?
a) 12 cm b) 8 cm c) 9.5 cm d) 7.5 cm Answer: b Explanation: Let the tree ...
View QuestionRohit while seeing a bird on tree top made 45° angle of elevation. He walks 240ft. towards the tree to observe the bird closely, thus making 60° angle of elevation. How far was Rohit from the tree initially?
a) $$\frac{{240\sqrt 3 }}{{\sqrt 3 - 1}}\,{\text{ft}}$$ b) $$\frac{{240}}{{\sqrt 3 - 1}}\,{\text{ft}}$$ c) $$\frac{{240}}{{\sqrt 3 }}\,{\text{ft}}$$ d) $$240\sqrt 3 \,{\text{ft}}$$
View QuestionTheMohan looks at a tree top and the angle made is 45°. He moves 10 cm back and again looks at the tree top but this time angle made is 30°. How high is the tree top from ground?
a) $$\frac{{10}}{{\sqrt 3 + 1}}\,{\text{cm}}$$ b) $$20\sqrt 3 \,{\text{cm}}$$ c) $$20\,{\text{cm}}$$ d) $$\frac{{10}}{{\sqrt 3 - 1}}\,{\text{cm}}$$ Answer: d ...
View QuestionTree top’s angle of elevation is 30° from a point on ground, 300m away the tree. When the tree grew up its angle of elevation became 60° from the same point. How much did the tree grow?
a) $$100\sqrt 3 \,{\text{m}}$$ b) $${\text{200}}\sqrt 3 \,{\text{m}}$$ c) $$300\frac{1}{{\sqrt 3 }}\,{\text{m}}$$ d) $$\frac{{200}}{{\sqrt 3 }}\,{\text{m}}$$ Answer: ...
View QuestionA man can row upstream at 12km/hr and downstream at 18 km/hr. The man rowing speed in still water is?
a) 15 km/hr b) 5 km/hr c) 25 km/h d) 10 km/h Answer: a Explanation: Speed of boat in ...
View QuestionA boat can tarvel 36 km upstream in 5 hours. If the speed of the stream is 2.4 kmph, how much time will the boat take to cover a distance of 78 km downstream?(in hours)
a) 5 hours b) 6.5 hours c) 5.5 hours d) 8 hours Answer: b Explanation: Distance covered by a ...
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