All questions
- Let 'M' be the mass and 'L' be the length of a thin uniform rod. In first case, axis of rotation B) option is correct answer Detailed solution: Moment of inertia of the rod about an axis passing through its centre and perpendicular to th... 1
- A stone of mass 1 kg is tied to a string 2m long and is rotated at constant speed of 40 ms^-1 in a vertical circle The correct answer is option B) 79/81 Explanation:: Formula for tension in vertical circle along a string is T=mv²over r+mg cosθ For highest... 1
- The difference between angular speed of minute hand and second hand of a clock is B) is the correct answer 59π/1800 rad/s Explanation:: Angular speed of minute hand ω_m=2πover 60×60 Angular speed of second hand ω _s =2πove... 1
- An ideal gas has pressure ′ P ′ , volume ′ V ′ and absolute temperature ′ T ' correct option is A) Pm/Kt explaination:: From PV=nRT PV=NKT here K is boltzmann constant now ρ=m/V ρ=Nm/V therefore , V=NKT/P ρ=Pm/NKT valu... 1
- For three events A, B and C, P(Exactly one of A or B occurs) = P(Exactly one of B or C occurs) = P(Exactly one of C or A occurs) = 1/4 The correct answer is option B)7/16 P(A) + P(B) – 2P (A ∩ B) = 1/4 P(B) + P(C) – 2P(B ∩C) = 1/4 P(A) + P(C) – 2P(A ∩ C) = 1/4 P (A ∩ B ∩ C)... 1
- If 12 identical balls are to be placed in 3 identical boxes, then the probability that one of the boxes contains exactly 3 balls, is The correct answer is A)55/3(2/3)¹1 Explanation:: There are 12 balls and they are identical . And 3 identical boxes . That hspace0.2cmmeans... 1
- The number of solution of the equation x+2tanx=π/2 in interval [0,2π] is The correct answer is 3 interval For more information and video solution visit Link not available 1
- The general solution of sin x − 3 sin2x + sin3x = cos x − 3 cos2x + cos3x is _________. Below answer is correct 2
- The correct pair of the ambident nucleophiles is are: The correct answer is 3) A and C only Explaination : Ambident nucleophile means in a nucleophile more than one electron donor atom. Eg in NO... 2
- One of the byproduct formed during the recovery of NH3 from solvay process :- The correct answer is C) CaCl₂ Explanation::- This process is also termed as ammonia recovery . The calcium hydroxide is reacted with the am... 1
- The set that represents the Pair of neutral oxide of nitrogen Correct answer is C) NO and N₂O Explanation :: Neutral oxides are those oxides which show neither basic nor acidic properties when they reac... 1
- A bird is sitting on the top of a vertical pole 20 m high and its elevation from a point O on the ground is 45° 20sqrt3-1 is the correct answer 2
- If x = √3/2 + i/2(i = √-1), then (1 + iz + z5 + iz8)9 is equal to - The correct answer is A) -1 Detailed solution:: 1
- If (z - α)/(z + α) (α ∈ R) is a purely imaginary number and |z| = 2, then a value of α is : The correct answer is B) 2 Explanation :: dfrac z -α z +α +dfrac overline z -α overline z +α =0 z z + z α - α z - α ^ 2 + z z - z α + z α -... 1
- Let A={θϵ(-π/2π):3+2isinθ/1-2isinθ is purely imaginary} then the sum of elements in A is The correct answer is D)2π/3 Detailed answer 1
- Cos190.cos10+sin190.sin10= a)2 b)0 c)-1 d)1 The correct answer is c)-1 Detailed solution 1
- The value of cos π/2^2.cosπ/2^3..... .cosπ/2^10.sinπ/2^10 The correct answer is option B)1/512 Detailed solution 1
- How do I ace the 11th class Maharashtra boards? How do I ace the 11th class Maharashtra boards? Brainiak.in; Points to remeber make a study plan time management optimize syllabus (PYQ) Pre... 1
- tanA/(1-cotA) + cotA/(1-tanA) can be written as The correct answer is b) secA cosecA+1 1
- cos210° - cos10°cos50° + cos250° is equal to (1) 3/2 (2) 3/4 (3) 3/2(cos20° + 1) (4) 3/4(cos20° + 1) The correct answer is 2) 3/4 Detailed solution :: 1
- Two vertical poles of heights, 20 m and 80 m stand a part on a horizontal plane The correct answer is B)16 Detailed solution: 1
- If cos (α + β) = 4/5 and sin (α – β) = 5/13 , where they lie between 0 and π/4, find the value of tan2α Correct option is D) 63/16 Detailed solution: 1
- If alpha=cos^-1(3/5) , beta=tan^-1(1/3), where 0<alpha,beta<π/4 , then alpha-beta is equal to Correct answer is A) sin⁻¹ 9over5√(10) Detailed answer 1
- The maximum value of 3cos theta+5sin{theta-π/6) for any real value of theta is The correct option is A) √(19) Detailed solution : 1