Related Questions

A woman while shopping in a mall pushes her trolley 20 metres through an alley which is going East, then she turns to her left and walks 30 metres, then she turns West and walks another 30 metres, then she turns South and walks 30 metres and then she turns West and walks 25 metres. Where is she now with reference to her starting position?
A 35 metres West
B 5 metres West
C 35 metres East
D 5 metres East
The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
A $$\frac{{\text{f}}}{{{\text{H}}\sec \theta }}$$
B $$\frac{{{\text{f}}\sec \theta }}{{\text{H}}}$$
C $$\frac{{\text{f}}}{{\text{H}}}$$
D $$\frac{{\text{f}}}{{{\text{H}}\cos \frac{1}{2}\theta }}$$
The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is
A $$\frac{{\text{f}}}{{{\text{H}}\sec \theta }}$$
B $$\frac{{{\text{f}}\sec \theta }}{{\text{H}}}$$
C $$\frac{{\text{f}}}{{\text{H}}}$$
D $$\frac{{\text{f}}}{{{\text{H}}\cos \frac{1}{2}\theta }}$$
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
A $${\text{B}} = \frac{{{\text{bH}}}}{{\text{f}}}$$
B $${\text{B}} = \frac{{\text{f}}}{{{\text{bH}}}}$$
C $${\text{B}} = \frac{{\text{b}}}{{{\text{fH}}}}$$
D $${\text{B}} = \frac{{\text{H}}}{{{\text{bf}}}}$$
‘H’ is the flying height above mean ground level and ‘f’ is the principal distance of a vertical photograph. The mean scale of the photographs is
A H × f
B $$\frac{{\text{H}}}{{\text{f}}}$$
C $$\frac{{\text{f}}}{{\text{H}}}$$
D H + f
For plane ground the scale of a vertical photograph will be same as that of a tiled photograph along the photo parallel through
A Isocenter
B Plumb point
C Principal point
D None of these
A rectangular floor that measures 8 metres by 10 metres is to be covered with carpet squares that each measures 2 metres by 2 metres. If a carpet square costs Tk. 12, calculator the total cost cover 2/3 of the floor?
A Tk. 160
B Tk. 240
C Tk. 480
D None of these
A train of length, 245 metres, takes 20 seconds to cross a 355 metres long bridge. How much time (in seconds) will the train take to cross a 390 metres long platform?
A 6.5
B 9
C 21.16
D 15
The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is
A f2
B 2f2
C 3f2
D $$\frac{1}{2}$$f
A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?
A 13.33
B 26.67
C 40
D 66.67

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