A wire is suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy […]
If the temperature of the sun were to increase from T to 2T and its radius from R and 2R, then the ratio of the radiant energy received on earth to what it was previously […]
The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
Options
(a) 2 (b) 2√2 (c) 4 (d) 2√3
Correct Answer:
2√3
Explanation:
No explanation available. Be the first to write the explanation […]
The point of suspension λ of a simple pendulum with normal time period T₁ is moving upward according to equation y=kt² where k=1 m/s². If new time period is T² the ratio T₁²/T₂² will be […]
A thin rod of length L and mass M is held vertically with one end on the floor and is allowed to fall. Find the velocity of other end when it hits the floor, assuming […]
Angular momentum of the particle rotating with a central force is constant due to
Options
(a) Constant torque (b) Constant force (c) Constant linear momentum (d) Zero torque
Correct Answer:
Zero torque
Explanation: […]
A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms⁻¹. Assuming constant acceleration, the approximate time that it spends in the barrel after the gun is fired is
The circular motion of a particle with constant speed is
Options
(a) Periodic but not simple harmonic (b) Simple harmonic but not periodic (c) Period and simple harmonic (d) Neither periodic not simple harmonic
The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t² metre. The angle of projection is
Options
(a) sin⁻¹ (4/5) (b) sin⁻¹ (3/5) (c) sin⁻¹ (4/3) (d) sin⁻¹ (3/4)
A super conductor exhibits perfect
Options
(a) Ferrimagnetism (b) Ferromagnetism (c) Paramagentism (d) Diamagnetism
Correct Answer:
Diamagnetism
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
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