May 2022
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May 23, 2022
A flywheel of moment of inertia 0.32 kg–m2 is rotated steadily 120 rad/s at by a 50 w electric motor....
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May 23, 2022
The angular velocity of a body is →w= 2^j+3^k+4^k and a torque →τ = ^j+2^k+3^k acts on it. The rotational...
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May 23, 2022
a. Brass is an interstitial alloy, while steel is a substitutional alloy, while steel is a substitutinal b. Brass is...
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May 23, 2022
Ag+ << Br– . The AgBr crystal should have the following characteristics a. Defectless (perfect) crystal b. Schottky defect only...
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May 23, 2022
a. Softer b. less tensile c. less malleable d. more ductile Ans. b Explanation : On adding non-metal the metal...
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May 23, 2022
(a) Disc (b) Ring (c) Solid sphere (d) All will make same number of rotations Ans. d (16)
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May 23, 2022
a. Establishing thermal equilibrium b. Having tendency to diffuse c. Contributing to scattering d. Introducing new electronic energy levels Ans....
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May 23, 2022
(a) 400% (b) 800% (c) 200% (d) 100% Ans. b (15)
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May 23, 2022
a. NaCl b. KCl c. CsCl d. All of these Ans. d Explanation : Schottky defects occurs in highly ionic...
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May 23, 2022
(a) Length (b) Breadth (c) Shape (d) Volume Answer-c (6)
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May 23, 2022
A wheel is rotating with an angular speed of 20 rad/s . It is stopped to rest by applying a...
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May 23, 2022
A rod of length l and radius r is joined to a rod of length l/2 and radius r/2 of...
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May 23, 2022
a. Frenkel defect b. Metal excess defect c. Metal deficiency generally defect d. Schottky defect Ans. b (9)
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May 23, 2022
(a) √4 : √3 (b)√3: √4 (c) √3:√2 (d) √2:√3 Ans. a (6)
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May 23, 2022
a. Positive ions and negative ions are of different size b. Positive ions and negative ions are of same size...
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May 23, 2022
(a) 0.002 (b) 0.004 (c) 0.008 ...
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May 23, 2022
(a) Protonema (b) Prothallus (c) Proembryo (d) Embryo Ans. a (10)
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May 23, 2022
(a) Pteridophytes (b) Pines (c) Monocots (d) Dicots Ans. a (8)
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May 23, 2022
(a) Gametophyte (b) Sporophyte (c) Both (a) and (b) (d) None of these Ans. b (11)
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May 23, 2022
(a) Total Energy (b) K.E. (c) Angular Velocity (d) Linear Momentum Answer: a (11)
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May 23, 2022
(a) Peristome teeth (b) Annulus (c) Calyptra (d) Operculum Ans. a (7)
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May 23, 2022
(a) Potential energy (b) Kinetic energ (c) Linear momentum (d) Angular momentum Answer:D (11)
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May 23, 2022
(a) Keplers law of areas still holds (b) Keplers law of period still holds (c) Keplers law of areas and...
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May 23, 2022
(a) Tangential velocity is constant (b) Angular velocity is constant (c) Radial velocity is constant (d) Areal velocity is constant...
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May 23, 2022
(a) Work energy theorem (b) Conservation of linear momentum (c) Conservation of angular momentum (d) Conservation of energy Answer: c...
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May 23, 2022
(a) 1.38 (b) 1.383/2 (c) 1.381/2 ...
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May 23, 2022
(a) T2 ∞ R3 (b) T3 ∞ R2 (c) T2 ∞ (1/R3 ) ...
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May 23, 2022
(a) 16 L (b) 64 L (c) L/4 ...
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May 23, 2022
(a) 4.2 years (b) 2.8 years (c) 5.6 years (d) 8.4 years Answer: b (9)
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May 23, 2022
(a) A (b) B (c) C (d) D Answer: c (14)
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May 23, 2022
(a) The time taken in travelling DAB is less than that for BCD (b) The time taken in travelling DAB...
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May 23, 2022
(a) 53/2 years (b) 52/3years (c) 51/3 years (d) 51/2 years Answer: a (6)
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May 23, 2022
(a) Spirogyra (b) Mucor (c) Moss (d) Both (b) and (c) Ans. c (14)
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May 23, 2022
(a) Copernicus (b) Kepler (c) Galileo (d) None Answer: A (7)
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May 23, 2022
(a) 1 (b) 2 (c) 3 (d) 4 Ans. b (6)
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May 23, 2022
A satellite of mass m is circulating around the earth with constant angular velocity. If radius of the orbit is...
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May 23, 2022
The largest and the shortest distance of the earth from the sun are r1 and r2 , its distance from...
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May 23, 2022
A metal bar of length L and area of cross-section A is clamped between two rigid supports. For the material...
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May 23, 2022
Two planets move around the sun. The periodic times and the mean radii of the orbits are T1 , T2and...