Statement: The amplitude of an oscillating pendulum decreases gradually with time.

Reason: The frequency of the pendulum decreases with time.

Both statement and reason are true and the reason is the correct explanation of the statement

Both statement and reason are true but the reason is not the correct explanation of the statement

Statement is true, but the reason is false

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	Statement: The amplitude of an oscillating pendulum decreases gradually with time.
A.	Reason: The frequency of the pendulum decreases with time.
B.	Both statement and reason are true and the reason is the correct explanation of the statement
C.	Both statement and reason are true but the reason is not the correct explanation of the statement
D.	Statement is true, but the reason is false
E.	Statement and reason are false
Answer» D. Statement is true, but the reason is false

Discussion

2.	A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92×10-3 m. What must be the least period of these oscillations, so that the object is not detached from the platform?
A.	0.1256s
B.	0.1356s
C.	0.1456s
D.	0.1556s
Answer» B. 0.1356s

Discussion

3.	Natural length of spring is 60 cm and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced in the spring (take g=9.8m/s2) is?
A.	4.9cm
B.	0.49cm
C.	9.4cm
D.	0.94cm
Answer» B. 0.49cm

Discussion

4.	The displacement of an object attached to a spring and executing simple harmonic motion is given by x = 2×10-2 cosπt(in m). The time at which the maximum speed first occurs is?
A.	0.5s
B.	0.75s
C.	0.125s
D.	0.25s
Answer» B. 0.75s

Discussion

5.	A simple pendulum of length l and with a bob whose mass is m is moving along a circular arc of angle θ in a vertical plane. A sphere of mass m is placed at the end of the circle. What momentum will be given to the sphere by the moving bob?
A.	Infinity
B.	Constant
C.	Unity
D.	Zero
Answer» E.

Discussion

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

Statement: The amplitude of an oscillating pendulum decreases gradually with time.

A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92×10-3 m. What must be the least period of these oscillations, so that the object is not detached from the platform?

Natural length of spring is 60 cm and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced in the spring (take g=9.8m/s2) is?

The displacement of an object attached to a spring and executing simple harmonic motion is given by x = 2×10-2 cosπt(in m). The time at which the maximum speed first occurs is?

A simple pendulum of length l and with a bob whose mass is m is moving along a circular arc of angle θ in a vertical plane. A sphere of mass m is placed at the end of the circle. What momentum will be given to the sphere by the moving bob?