Find the distance of a heavenly object from the earth if the parallactic angle as measured from two places at a distance of `6.284xx10^(6)m` apart is `2^(@)`.
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Limiting angle of a prism is defined as the largest angle of the prism (A) for which no emergent ray is obtained. (a) Find the limiting angle `(A_(0))
Correct Answer - (a) `A_(0) = 2 sin^(-1) ((1)/(mu))` (b) NO
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Two places A and B on the same longitude are h km apart along the surface of the earth, A is at the equator. The shadow of a vertical pole is zero at
Correct Answer - `R=(h)/(tan^(1)(1)/(2))`
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A copper bar of mass m sides under gravity on two smooth parallel rails l distance apart and set at angle `alpha` to the horizontal . At the lop , the
Correct Answer - `(mgR sin alpha)/(B^(2)l^(2))`
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Two mirrors are inclined by an angle `30^(@)`. An object is placed making `10^(@)` with the mirror My Find the positions of the first two images forme
Correct Answer - `10^(@)` and `50^(@)` from `M_(1)` and `20^(@)` and `40^(@)` from `M_(2),11`
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Two point sources are `d = nlambda` apart. A screen is held at right angles to the line joining the two sources at a distance D from the nearer source
Correct Answer - `[sqrt((2D(D+nlambda))/(n))]`
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A convergent lens with a focal length of f = 10 cm is cut into two halves that are then moved apart to a distance of d =0.5 mm (a double lens). Find t
Correct Answer - [0.1 mm]
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A ray of light is incident on the glass prism at an angle of `40^(@)`. Find the angle of emergence, if the angle of prism is `60^(@)` and refractive i
Correct Answer - `58.5^(@)`
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The moon is at a distance of 3.84 × 10^8 m from the Earth. If viewed from two diametrically opposite points on the Earth, the angle subtended
Given, Distance (D) = 3.84 × 108 m Subtended angle (α) = 1° 54′ = (60’+ 54′) = 114′ = 114 × 2.91 × 10-4 rad = 3.317 × 10-2 rad To find: Diameter of Earth (d) Formula: d =...
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The distance of the planet from the earth is measured by __________.
Correct option is: (D) parallax method
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Places A and B are 160 km apart on a highway. One car starts from A and another from B at the same time. If they travel in the same direction, they me
Correct Answer - 50 kmph, 30 kmph
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