11th Class Physics 2025 Chapter 2 MCQs
11th Class Physics 2025 Chapter 2 MCQs solution.
Tick the correct option.
2.1 The angle at which dot product becomes equal to cross product:
(a) 65 degree
(b) 45 degree
(c) 76 degree
(d) 30 degree
Option (b) is correct.
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2.2 The projectile gains its maximum height at an angle of:
(a) 0 degree
(b) 45 degree
(c) 60 degree
(d) 90 degree
Option (d) is correct.
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2.3 The scalar product of two vectors is maximum if they are:
(a) perpendicular
(b) parallel
(c) at 30 degree
(d) at 45 degree
Option (b) is correct.
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2.4 The range of projectile is same for two angles which are mutually:
(a) perpendicular
(b) supplementary
(c) complimentary
(d) 270 degree
Option (c) is correct.
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2.5 The acceleration at the top of a trajectory of projectile is:
(a) maximum
(b) minimum
(c) zero
(d) g
Option (c) is correct.
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2.6 SI unit of impulse is:
$$(a)\;kg\;m\;s^{-2}$$
(b) N m
(c) N s
$$(d)\;N\;m^2$$
Option (c) is correct.
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2.7 The rate of change of momentum is:
(a) force
(b) impulse
(c) acceleration
(d) power
Option (a) is correct.
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2.8 As rocket moves upward during its journey, then its acceleration goes on:
(a) increasing
(b) decreasing
(c) remains same
(d) it moves with uniform velocity
Option (a) is correct.
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2.9 Elastic collision involves:
(a) loss of energy
(b) gain of energy
(c) no gain , no loss of energy
(d) no relation between energy and elastic collision
Option (c) is correct.
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