Related Questions

The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as
A Principal point
B Isocenter
C Plumb point
D Perspective centre
Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?
A -4.33 diopters
B 12.33 diopters
C -12.33 diopters
D 4.33 diopters
The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as
A Isocenter
B Principal point
C Perspective centre
D Plumb line
The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as
A Photo plumb point
B Plumb point
C Nadir point
D Isocenter
If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be
A f sin θ
B f cos θ
C f tan θ
D f sec θ
Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?
A 1010
B 1020
C 2010
D 3010
Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?
A 1020Km
B 1010Km
C 2010Km
D 3010Km
Rotation of the camera at exposure about its vertical axis, is known as
A Swing
B Tilt
C Tip
D None of these
একটি দ্বি-উত্তল অভিসারি লেন্সের প্রত্যেক পৃষ্ঠের বক্রতার ব্যাসার্ধ 30cm এবং গ্লাসের প্রতিসরাঙ্ক 1.50। লেন্সটির ফোকাস দৈর্ঘ্য কত হবে? (The radius of curvatures of both surfaces of a double convex lens are 30cm each and refractive index of glass is 1.50. What will be focal length of the lens?)
A 15 cm
B 30 cm
C 45 cm
D 60 cm
Point A is south of point B and point B is west point C. To which direction is point A with respect to point C ?
A South
B South West
C North east
D North West

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