Last seen: Dec 29, 2021
Correct answer: (b) South America
Correct answer: (b) 22 percent of the total species
Correct answer: (a) Animals
Correct answer: (c) Destruction of natural habitats
Correct answer: (b) Biosphere reserves
Correct answer: (a) Habitat destruction
Since displacement in both the cases is the same, let it be s Also, w1 = w2 ⇒ F1s cos 45° = F2s cos 60° ⇒ = ⇒ x = 2
Correct answer: (a) Joule (second – Ampere2) Explanation: = = = Joule (second – Ampere2)
Correct answer: (a) C Explanation: We can conclude from the given equation ω = 1010 k = 50 Speed = = = 2 × 108 = C
Correct answer: (b) 171 km Explanation: Range = + = + ≈ 171 km
Correct answer: (d) 20 Explanation: ip = 20 - is ⟹ = 20() ⟹ = 20() Therefore, n = 20
Correct answer: (d) 24 μC Explanation: Using i = = 3 A Therefore, VAB = i × 4 = 12 V VAC = VCB = 6 Volt Therefore, q on 4 μF = CVAC = 24 μC
Correct answer: Explanation: Y = T4 = Constant T4 V-1 = Constant V-1(4TdT) + T4 () = 0 = = ∴ Y =
Correct answer: (c) 1225 Hz Explanation: figure.png Vs = 36 km/hr = 10 m/s V0 = 72 km/hr = 20 m/s f′ = f′ = 1120 = 1120 × = 1225...
Correct answer: (a) 2 Explanation: figure.png u = + + + = ()(2m - 2(M - m) + (M - 2m)2 + √2(M - 2m) (4m - 4m - 2 √2m) + (-2M + 2M + ...
Correct answer: (a) Explanation: figure.png 4anr = 24a Thus, n1 = 6 turns 3anz = 24 ⇒ nz = 8 turns figure.png = = =
Correct answer: (d) Mammals
Correct answer: (a) By creating Biosphere reserve
Correct answer: (a) introduction of high yielding varieties
Correct answer: (c) Eastern Himalayas and Western Ghats