Forwarded from Nda pyq
51. A thin disc and a thin ring, both have mass M and radius R. Both rotate about axes through their center of mass and are perpendicular to their surfaces at the same angular velocity. Which of the following is true?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
20%
(a) The ring has higher kinetic energy
34%
(b) The disc has higher kinetic energy
28%
(c) The ring and the disc have the same kinetic energy
18%
(d) Kinetic energies of both the bodies are zero since they are not in linear motion
Forwarded from Nda pyq
53.In which of the following phenomena do heat. waves travel along a straight line with the speed of light?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
18%
(a) Thermal conduction
25%
(b) Thermal convection
37%
(c) Thermal radiation
20%
(d) Both, thermal conduction and radiation
Forwarded from Nda pyq
Forwarded from Nda pyq
55. When a ball bounces off the ground, which of the following changes suddenly? (Assume no loss of energy to the floor)
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
10%
(a) Its speed
24%
(b) Its momentum
46%
(c) Its kinetic energy
20%
(d) Its potential energy
Forwarded from Nda pyq
Forwarded from Nda pyq
56. Which one of the following compounds does not exhibit a different oxidation number of the same element ?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
19%
(a) Pb304
32%
(b) Fe3O4
22%
(c) Fe2O3
27%
(d) Mn3O4
Forwarded from Nda pyq
Forwarded from Nda pyq
59. Which one of the following statements about diamond and graphite is not correct?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
32%
(a) Diamond has a tetrahedral structure, whereas graphite has a hexagonal planar structure.
40%
(b) Both physical and chemical properties of diamond and graphite are different.
16%
(c) Graphite is soft but diamond is hard.
12%
(d) Graphite is a good conductor of electricity while diamond is not.
Forwarded from Nda pyq
Forwarded from Nda pyq
Forwarded from Nda pyq
63. If an object moves at a non-zero constant acceleration for a certain interval of time, then the distance it covers in that time
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
24%
(a) depends on its initial velocity.
42%
(b) is independent of its initial velocity.
21%
(c) increases linearly with time.
13%
(d) depends on its initial displacement.
Forwarded from Nda pyq
64. A solid dise and a solid sphere have the same mass and same radius. Which one has the higher moment of inertia about its centre of mass?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
31%
(a) The disc
31%
(b) The sphere
25%
(c) Both have the same moment of inertia
13%
(d) The information provided is sufficient to answer the question not
Forwarded from Nda pyq
65. Two substances of densities P, and P are mixed in equal volume and their relative density is 4. When they are mixed in equal masses, relative density is 3. The values of P1 and p respectively are
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
31%
(a) 6, 2
58%
(b) 3,5
8%
(c) 12,4
4%
(d) 9,3
❤1
Forwarded from Nda pyq
66.car start from Agra, goes 50 km in straight line towards south, immediately turns around and returns to Agra. The time taken for this round trip is 2 hours. The magnitude of the avg velocity of car for this round trip
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
23%
(a) is 0.
26%
(b) is 50 km/hr.
39%
(c) is 25 km/hr.
13%
(d) cannot be calculated without knowing acceleration.
Forwarded from Nda pyq
67. "The sum of emf's and potential differences around a closed loop equals zero" is a consequence of
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
34%
(a) Ohm's law.
34%
(b) Conservation of charge.
16%
(c) Conservation of momentum.
16%
(d) Conservation of energy.
Forwarded from Nda pyq
68. A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurements is more precise?
@faujiaddaa NDA 2 2019
@faujiaddaa NDA 2 2019
Anonymous Quiz
43%
(a) 0-50 mm
30%
(b) 29-07 cm
17%
(c) 0-925 m
10%
(d) 910 mm