Height and Distance Questions Practice Question and Answer
5 Q: A kite is flying at a height of 50m. If the length of string is 100m then the inclination of string to the horizontal ground in degree measures is:
815 0606ed2fa556643278a7e1a44
606ed2fa556643278a7e1a44- 190false
- 245false
- 360false
- 430true
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Answer : 4. "30"
Q: A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30° with the ground. How high on the wall does the ladder reach?
604 06073fbbfc61d5c2ec9409048
6073fbbfc61d5c2ec9409048- 110 mtrue
- 217.32 mfalse
- 334.64 mfalse
- 430 mfalse
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Answer : 1. "10 m"
Q: If the angle of elevation of the sun changes from 30o to 45o then length of the shadow of a pillar decreases by 20 meters. The height of the pillar is:
630 0609909ebc4aedb3e80669ee5
609909ebc4aedb3e80669ee5- 1$$ {20(\sqrt{3}-1)}\ meter$$false
- 2$$ {20(\sqrt{3}+1)}\ meter$$false
- 3$$ {10(\sqrt{3}-1)}\ meter$$false
- 4$$ {10(\sqrt{3}+1)}\ meter$$true
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Answer : 4. "$$ {10(\sqrt{3}+1)}\ meter$$"
Q: An aero plane flying horizontally at a height of 3 km. Above the ground is observed at a certain point on earth to subtend an angle of 600. After 15 sec flight, its angle of elevation is changed to 300. The speed of the aero plane (taking √3=1.732)
215 06343e3243a01e50b2700b8f0
6343e3243a01e50b2700b8f0- 1230.63 m/secfalse
- 2230.93 m/sectrue
- 3235.85 m/secfalse
- 4236.25 m/secfalse
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Answer : 2. "230.93 m/sec"
Q: If the angel of elevation of the sun decreases from 450 to 300, then the length of the shadow of a pillar increase by 60 m. The height of the pillar is
206 06343e37632d3e964961fb5a8
6343e37632d3e964961fb5a8- 160(√3+1) mfalse
- 230(√3-1) mfalse
- 330(√3+1) mtrue
- 460(√3-1) mfalse
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