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Rossby Waves

Rossby Waves are a form of inertial wave that occurs in rotating fluids. Also known as planetary waves, they were... View Article

Chikungunya is an infection caused by the Chikungunya virus (CHIKV). It is mainly spread by the Aedes albopictus and Aedes... View Article

World Biofuel Day is observed on August 10 every year. It is observed to raise awareness about the importance of... View Article

The Himalayan Ibex (Capra sibirica hemalayanus) is a species of wild goat found in the trans-himalayan regions of Jammu and... View Article

1) 4 sin2 ɑ 2) – 4 sin2 ɑ 3) 2 sin 2ɑ 4) 4 Solution: (1) 4 sin2 ɑ... View Article

1) tan-1 [(1 / 2) tan (x / 2)] 2) 2 tan-1 [2 tan (x / 2)] 3) (1 /... View Article

1) 1 / √10 2) – 1 / √10 3) 1 / 10 4) – 1 / 10 Solution: (1)... View Article

1) 16 / 15 2) 14 / 15 3) 12 / 15 4) 11 / 15 Solution: (2) 14 /... View Article

1) √3 2) 1 / √3 3) 1 4) None of these Solution: (2) 1 / √3 3 sin-1 [2x]... View Article

1) – 2 2) 8π – 26 3) 4π + 2 4) None of these Solution: (2) 8π – 26... View Article

1) x + y + xy = 1 2) x + y – xy = 1 3) x + y... View Article

1) π 2) π / 2 3) π / 3 4) π / 4 Solution: (4) π / 4 2 tan-1... View Article

1) tan-1 [3a + a3] / [1 + 3a2] 2) tan-1 [3a – a3] / [1 + 3a2] 3) tan-1... View Article

1) 12 / 25 2) 24 / 25 3) 1 / 5 4) None of these Solution: (2) 24 /... View Article

1) cot-1 √x 2) tan-1 √x 3) tan-1 x 4) cot-1 x Solution: (2) tan-1 √x Let x = tan2... View Article

(a) [3 – √5] / 2 (b) [3 + √5] / 2 (c) 2 / [3 – √5] (d) 2... View Article

1) 1 2) 0 3) -1/2 4) 1/2 Solution: (2) 0 2 cos-1 √(1 + x) / 2 = π... View Article

1) 0 2) 1 / √5 3) 2 / √5 4) √3 / 2 Solution: (2) 1 / √5 sin-1... View Article

1) √2 2) 3 3) √3 4) [√3 – 1] / [√3 + 1] Solution: (3) √3 tan-1 x +... View Article

1) ± 1 / 3 2) ± 1 / 4 3) ± √3 / 2 4) ± 1 / 2... View Article