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4

The rate of change of parallax dp/dh with respect to change in h, may be expressed as

A. fB/(H - h)

B. fB/(H - h)2

C. fB/(H + h)

D. fB/(H + h)2

Correct Answer :

B. fB/(H - h)2


Related Questions

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4

Pick up the correct statement from the following:

A. Refraction correction is zero when the celestial body is in the zenith

B. Refraction correction is 33' when the celestial body is on the horizon

C. Refraction correction of celestial bodies depends upon their altitudes

D. All the above

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4

The necessary geometrical condition for triangulation adjustment is:

A. The sum of the angles around a station should be 360°

B. The sum of the three angles of a plane triangle should be 180°

C. The sum of the eight angles of a braced quadrilateral should be 360°

D. All the above

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4

G.M.T. corresponding to given mean time, equals

A. L.M.T. - East longitude in time

B. L.M.T. + East longitude in time

C. L.M.T. - West longitude in time

D. None of these

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4

The angle between the observer's meridian and declination circle of a heavenly body, is known as

A. Hour angle

B. Azimuth

C. Right ascension

D. Declination

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4

The great circle which passes through the zenith, nadir and the poles, is known as

A. Meridian

B. Vertical circle

C. Prime vertical

D. None of these

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4

A nautical mile is

A. One minute arc of the great circle passing through two points

B. One minute arc of the longitude

C. 1855.109 m

D. All the above

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4

If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is

A. 30°

B. 35°

C. 40°

D. 45°

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4

Rotation of the camera at exposure about its vertical axis, is known as

A. Swing

B. Tilt

C. Tip

D. None of these

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4

The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

A. Horizon and equator

B. Zenith and pole

C. Equator and zenith

D. Pole and horizon

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4

Latitude of a place is the angular distance from

A. Greenwich to the place

B. Equator to the poles

C. Equator to the nearer pole

D. None of these

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4

Pick up the correct statement from the following:

A. One degree of longitude has greatest value at the equator

B. One degree of longitude has greatest value at the poles

C. One degree of longitude has the same value everywhere

D. One degree of latitude decreases from the equator to the poles

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4

According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of

A. Tangents of two adjacent parts

B. Sines of two adjacent parts

C. Cosines of two adjacent parts

D. Both (a) and (b) above

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4

The slotted template method

A. Is prepared, by graphical method

B. Is suitable for large areas with less control

C. Is rapid and accurate

D. All the above

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4

The difference in longitude of two places expressed in time is equal to the difference in their

A. Sidereal time

B. Apparent solar time

C. Mean solar time

D. All the above

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4

Longitude of a place is the angular distance between the meridian of the place and

A. The standard meridian

B. The international date line

C. That of Greenwich

D. Both (a) and (c) of above

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4

To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30, 000, with a camera of 30 cm focal length, the flying height is

A. 4000 m

B. 5000 m

C. 6000 m

D. 7000 m

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4

The rate of change of parallax dp/dh with respect to change in h, may be expressed as

A. fB/(H - h)

B. fB/(H - h)2

C. fB/(H + h)

D. fB/(H + h)2

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4

The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as

A. Ground principal point

B. Ground plumb point

C. Iso-centre

D. Perspective centre

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4

The latitude of the observer's position, is

A. Elevation of the elevated pole

B. Declination of the observer's zenith

C. Angular distance along the observer's meridian between equator and the observer

D. All the above

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4

The prime vertical passes through

A. The east point of the horizon

B. The west point of the horizon

C. The zenith point of the observer

D. All the above

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4

The shortest distance between two places measured along the surface of the earth, is

A. Length of the equator between their longitudes

B. Length of the parallel between their longitudes

C. Length of the arc of the great circle passing through them

D. None of these

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4

If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be

A. 1 cm

B. 2 cm

C. 3 cm

D. 4 cm

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4

The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured

A. Normal to base line

B. Parallel to base line

C. Both (a) and (b)

D. Neither (a) nor (b)

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4

The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as

A. Satellite station

B. Eccentric station

C. False station

D. Pivot station

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4

The Polaris describes a small circle round the pole whose radius is approximately

A.

B.

C.

D.

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4

The value of geo-centric parallax to be added to the observed altitude of sun is

A. 9 cos α

B. 9 sin α

C. 9 tan α

D. 9 cot α

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4

Stellar astronomy deals with

A. Plane surveying

B. Geodetic surveying

C. Star observations

D. Planet observations

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4

The position of the sun when its north declination is maximum is known as

A. Vernal equinox

B. Autumnal equinox

C. Summer solstice

D. Winter solstice

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4

The longitudes of two places at latitude 60° N are 93° E and 97° W. Their departure is

A. 5100 nautical miles

B. 5700 nautical miles

C. 120 nautical miles

D. 500 nautical miles

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4

At the first point of Aeries, the sun moves

A. Northward

B. Southward

C. From south to north of the equator

D. From north to south of the equator