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**Q1. The ratio of the length of a rod and its shadow is 1 : `sqrt(3)` . The angle of elevation of the sum is **

**(a) 30 ^{o}**

**(b) 45 ^{o}**

**(c) 60 ^{o}**

**(d) 90 ^{o}**

**Q2. If the angle of elevation of a tower from a distance of 100 metres from its foot is 60 ^{o}, then the height of the tower is **

**Q3. If the altitude of the sum is at 60 ^{o}, then the height of the vertical tower that will cast a shadow of length 30 m is **

**Q4. If the angles of elevation of a tower from two points distant a and b (a>b) from its foot and in the same straight line from it are 30 ^{o} and 60^{o}, then the height of the tower is **

**Q5. If the angles of elevation of the top of a tower from two points distant a and b from the base and in the same straight line with it are complementary, then the height of the tower is **