Related Questions

The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is
A $$\frac{{\text{f}}}{{\text{H}}}$$
B $$\frac{{\text{f}}}{{{\text{H}} + {\text{h}}}}$$
C $$\frac{{\text{f}}}{{{\text{H}} - {\text{h}}}}$$
D $$\frac{{{\text{H}} - {\text{h}}}}{{\text{f}}}$$
‘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
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height
A $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{B}}}{{\text{H}}}}}$$
B $${\text{h}} = \frac{{\text{B}}}{{\text{H}}} \times {\text{dp}}$$
C $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{H}}}{{\text{B}}}}}$$
D $${\text{h}} = {\text{BHbp}}$$
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
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 height displacement on a vertical photograph
A Increases as the horizontal distance increases from the principal point
B Increases as the ground elevation increases
C Decreases as the flying height increases
D All the above
To produce an old photograph, a photographer charges x dollars to make a negative, 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
A 3
B 3.5
C 4
D 4.5
To produce an old photograph, a photographer charges x dollars to make a negative 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
A 3
B 3.5
C 4
D 4.5
To reproduce an old photograph, a studio charges Tk. z to make anegative, Tk. 0.6z for each of the first 10 prints, and Tk. 0.2z. for each print in excess of 10 prints. If Tk. 45 is the total charge to make one nagative and 20 prints from an old photograph then what is the value of z?
A Tk.3
B Tk.4
C Tk.4.5
D Tk.5

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