JEE Main 2020 (Online) 6th September Evening Slot | Simple Harmonic Motion Question 60 | Physics

JEE Main 2020 (Online) 6th September Evening Slot

MCQ (Single Correct Answer)

-1

When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by
y(t) = y₀ sin² $$\omega $$t, where 'y' is measured from the lower end of unstretched spring. Then $$\omega $$ is:

$$\sqrt {{g \over {{y_0}}}} $$

$${1 \over 2}\sqrt {{g \over {{y_0}}}} $$

$$\sqrt {{{2g} \over {{y_0}}}} $$

$$\sqrt {{g \over {2{y_0}}}} $$

JEE Main 2020 (Online) 5th September Morning Slot

MCQ (Single Correct Answer)

-1

In a resonance tube experiment when the tube is filled with water up to a height of 17.0 cm from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height of 24.5 cm. If the velocity of sound in air is 330 m/s, the tuning fork frequency is :

2200 Hz

3300 Hz

1100 Hz

550 Hz

JEE Main 2020 (Online) 3rd September Evening Slot

MCQ (Single Correct Answer)

-1

A block of mass m attached to a massless spring is performing oscillatory motion of amplitude ‘A’ on a frictionless horizontal plane. If half of the mass of the block breaks off when it is passing through its equilibrium point, the amplitude of oscillation for the remaining system become fA. The value of f is :

$${1 \over 2}$$

$$\sqrt 2 $$

$${1 \over {\sqrt 2 }}$$

JEE Main 2020 (Online) 2nd September Evening Slot

MCQ (Single Correct Answer)

-1

The displacement time graph of a particle executing S.H.M is given in figure :
(sketch is schematic and not to scale) JEE Main 2020 (Online) 2nd September Evening Slot Physics - Simple Harmonic Motion Question 63 English

JEE Main 2020 (Online) 2nd September Evening Slot Physics - Simple Harmonic Motion Question 63 English

Which of the following statements is/are true for this motion?
(A) The force is zero at t = $${{3T} \over 4}$$
(B) The acceleration is maximum at t = T
(C) The speed is maximum at t = $${{T} \over 4}$$
(D) The P.E. is equal to K.E. of the oscillation at t = $${{T} \over 2}$$

(B), (C) and (D)

(A), (B) and (C)

(A) and (D)

(A), (B) and (D)

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