Ajneesh
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Jul 7, 2022
(a) Decreases (b) Increases (c) Remains constant (d) Depends on the molecular motion Ans. c (22)
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Jul 7, 2022
(a) – 50 J (b) 20 J (c) 30 J (d) 50 J Ans. b (9)
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Jul 7, 2022
(a) Q + W (b) Q – W (c) Q (d) (Q – W)/2 Ans. b (3)
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Jul 7, 2022
area 0.05 m2. Increase in its potential energy will be (T = 0.2 N/m) (a) 5...
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Jul 7, 2022
(a) 24πR2S (b) 48 πR2S (c) ...
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Jul 7, 2022
(a) dQ = dU + PdV (b) dQ = dU x Pdv (c) ...
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Jul 7, 2022
(a) r (b) 0 (c) Infinity (d) 1/2r Ans. c (15)
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Jul 7, 2022
(a) 3 J (b) 6.5 J (c) 1.5 J (d) 4 J Ans. a (9)
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Jul 7, 2022
(a) 192π x 10-4 J (b) 280π x 10-4 J (c) 200π x 10-3...
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Jul 7, 2022
(a) 1:21/3 (b) 21/3:1 (c) 2...
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Jul 7, 2022
the increase in surface energy. (Surface tension of mercury is 0.465 J/m2 ) (a) 23.4 μJ ...
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Jul 7, 2022
how much work will have to be done (Surface tension of water =7.2 x10-2 N/m) (a) 7.2 x 10-6 Joule ...
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Jul 7, 2022
(a) Released (b) Absorbed (c) Both (a) and (b) (d) None of these Ans. a (13)
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Jul 7, 2022
108 drops of equal size. The energy expended in joules is (surface tension of Mercury is 460 x 10-3N/m (a) ...
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Jul 7, 2022
(a) 2 x 10-2Nm-1 (b) 2 x 10-4Nm-1...
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Jul 7, 2022
(a) 1 (b) 2 (c) 4 (d) 6 Ans. c (13)
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Jul 7, 2022
a ring of area is (Surface tension of liquid = 5Nm-1) (a) 0.75 J (b) 1.5 J (c) 2.25 J ...
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Jul 7, 2022
(a) 1 : 10 (b) 1 : 15 (c) 1 : 20 (d) 1 : 25 Ans. c (7)
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Jul 7, 2022
(a) Energy is released (b) Energy is absorbed (c) The surface area of the bigger drop is greater than the...
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Jun 7, 2022
radius is (Surface tension of the soap solution is (3/100) N/m) (a) 75.36 x 10-4 joule (b) 37.68 x 10-4...
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Jun 7, 2022
size 10 cm x 10 cm is (Surface tension T= 3 x 10-2 Nm (a)6 x 10-4 j (b)...
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Jun 7, 2022
106 small drops. The energy used will be (surface tension of mercury is 35 x10-3N/cm (a) 4.4 x 10-3 j...
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Jun 7, 2022
(a) 100 : 1 (b) 1000 : 1 (c) 10 : 1 (d) 1 : 100 Ans. d (6)
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Jun 7, 2022
The surface tension of liquid is 0.5 N/m. If a film is held on a ring of area 0.02 m2,...
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Jun 7, 2022
(a) Becomes zero (b) Becomes infinite (c) is equal to the value at room temperature (d) is half to the...
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Jun 7, 2022
(a) 1000 : 1 (b) 1 : 1000 (c) 10 : 1 (d) 1 : 10 Ans. d (5)
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Jun 7, 2022
is 2 x 10-2 N/m. To blow a bubble of radius 1 cm, the work done is (a) 4 π...
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Jun 7, 2022
(a) R/2 (b) R/5 (c) R/6 (d) R/10 Ans. d (11)
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Jun 7, 2022
(a) Rn(2/3) σ (b) (n(2/3) – 1) Rσ (c) (n(1/3) – 1) Rσ (d) 4πR2(n(1/3) – 1)σ (e) [1/( n(1/3)...
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Jun 7, 2022
(a) π D2 σ (b) 2 π D2 σ (c) 3 π D2 σ (d) 4 π D2 σ Ans....
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Jun 7, 2022
is 1.9 x 10-2N/m . Work done in blowing a bubble of 2.0 cm diameter will be (a) 7.6 x...
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Jun 7, 2022
10 cm× 6 cm to 10 cm × 11 cm is 3 ×10-4 joule. The surface tension of the film...
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Jun 7, 2022
(a) w= πr2T (b) w= 2πrT (c)w= 2πr2T (d) w= (3/4)πr3 T Ans. b (5)
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Jun 7, 2022
(a) 0o (b) 90o (c) Less than 90o (d) Greater than 90o Ans. d (5)
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Jun 7, 2022
from (1/√π) cm to (2/√π) cm. If the surface tension of water is 30 dynes per cm, then the work done...
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Jun 7, 2022
(a) 4πr2T (b) 2 πr2T (c) 12 πr2T (d) 24 πr2T Ans. d (54)
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Jun 7, 2022
(a) AT-1 (b) AT (c) A2T (d) A2T2 Ans. b (6)
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Jun 7, 2022
(a) Decrease (b) Increase (c) Remains the same (d) None of the above Ans. b (4)
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Jun 7, 2022
(a) 8πr2T (b) 2πr2T (c) 4πr2T (d) (4/3)πr2T Ans. a (6)