In a Jaipur school ground the shadow of a vertical flag pole 12 m tall is measured twice on the same day: once when the angle of elevation of the Sun is 60°, and again when it is 30°. The ratio (shadow at 60°) : (shadow at 30°) is:

Question

Accepted Answer

1 : 3. Shadow = height/tan(θ). At 60° the shadow is 12√3 = 4 √3 m; at 30° it is 12 √3 m. Ratio = 4 √3 : 12 √3 = 1 : 3. The height cancels, so the ratio would be the same for a pole of any height.

In a Jaipur school ground the shadow of a vertical flag pole 12 m tall is measured twice on the same day: once when the angle of elevation of the Sun is 60°, and again when it is 30°.
The ratio (shadow at 60°) : (shadow at 30°) is:

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More Class 10 Heights and Distances practice

In a Jaipur school ground the shadow of a vertical flag pole 12 m tall is measured twice on the same day: once when the angle of elevation of the Sun is 60°, and again when it is 30°.The ratio (shadow at 60°) : (shadow at 30°) is:

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Heights and Distances practice

In a Jaipur school ground the shadow of a vertical flag pole 12 m tall is measured twice on the same day: once when the angle of elevation of the Sun is 60°, and again when it is 30°.
The ratio (shadow at 60°) : (shadow at 30°) is: