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Given, Horizontal range is equal to 4 times the maximum height attained by the projectile. Therefore, So, angle of projection is 45°.
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Find CBSE, ICSE State Boards Textbook Solutions of Class 8 to 12 of all subjects. Read NCERT Textbooks Questions and Answers & Find Previous year solved papers.

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Let q1 and q2 be the point charges. Then, force between the charges when kept at a distance d apart is given byF=14πε∘q1q2d2a) Suppo
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(a) In – to(b) He – I(c) About – for(d) And – but
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Charge on sphere A=charge on sphere B=6.5×10-7 Cdistance between the spheres-r =50 cm =

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E°Cd2+/Cd = -0.40 V,  E°Cr3+/Cr = -0.74 VE°Fe3+/Fe = 0.77 V, E°Ag+/Ag =
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Focal length of the objective lens, fo = 4 cm
Focal length of the eyepiece, fe = 10 cm
Object distance, uo = -6 cm
Magnifying power of a microscope is given by
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Romanticism refers to a cultural movement which sought to develop a particular form of national sentiment.

(i) Romantic artists and poets generally criticised the glorification of reason and science and focussed on emotion, intention and mystical feeling.

(ii) Their effort was to create a sense of shared collective heritage, a common culture past, as the basis of nation.

(iii) Some German romantics believed that through folk songs, folk poetry and folk dances, the true spirit of the nation be popularised. German culture was to be discovered among common people.

Metal oxide = M0.98O If ‘x’ ions of M are in +3 state, then 3x + (0.98 – x) × 2 = 2 x = 0.04 So the percentage of metal in +3 state would be
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Since, length of two tangents drawn from an external point of circle are equal.So,    AP = ASBP = BQ DR = DSand    RC = CQAdding all, we get(AP + BP) + (
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