Deck 20: Principles of Oscillatory Motion and Related Measurements

Question 1

Oscillations become damped due to

A)normal force
B)friction
C)tangential force
D)parallel force

Answer 1

friction

Question 2

In s.h.m, object's acceleration depends upon

A)displacement from equilibrium position
B)magnitude of restoring force
C)both A and B
D)force exerted on it

Answer 2

both A and B

Question 3

angular frequency of s.h.m is equal to

A)2π
B)2πf
C)2f
D)1⁄T

Answer 3

2πf

Question 4

For a resonating system it should oscillate

A)bound
B)only for some time
C)freely
D)for infinite time

Question 5

Velocity at equilibrium position is

A)constant
B)minimum
C)maximum
D)zero

Question 6

If the swing moves from right to left, then velocity is

A)negative
B)positive
C)constant
D)zero

Question 7

Acceleration is directly related to

A)displacement
B)negative of displacement
C)velocity
D)negative of speed

Question 8

Gradient of velocity-time graph gives

A)force
B)frequency
C)wavelength
D)acceleration

Question 9

Magnitude of gradient of a-x graph is {{}}

A)ω
B)ω2
C)ω⁄2
D)ω3

Question 10

Potential energy of system is maximum at

A)extreme position
B)mean position
C)in between extreme and mean position
D)moderate position

Question 11

In s.h.m, acceleration is always directed towards the

A)equilibrium position
B)mean position
C)tangent to the motion
D)downwards

Question 12

Number of oscillations per unit time is

A)amplitude
B)wavelength
C)frequency
D)period

Question 13

When displacement x = 0, then kinetic energy of system is

A)minimum
B)maximum
C)constant
D)zero

Question 14

Energy of a system executing s.h.m is

A)increasing
B)decreasing
C)constant
D)variable

Question 15

Oscillatory motion has a

A)straight lined graph
B)randomly lined graph
C)sinusoidal graph
D)asymptotic graph

Question 16

During one oscillation, phase of oscillation changes by

A)π rad
B)π⁄2 rad
C)2π rad
D)4π rad

Question 17

If an object moves back and forth repeatedly around a mean position it is called

A)oscillating
B)revolving
C)rotating
D)motion

Question 18

Terminal potential difference of battery depends on

A)current
B)temperature
C)both A and B
D)resistance of external resistor

Question 19

Systematic errors occur due to

A)overuse of instruments
B)careless usage of instruments
C)both A and B
D)human sight

Question 20

In cells, internal resistance is due to

A)components inside
B)chemicals within
C)lead blocks
D)graphite

Question 21

Measurement which is close to the true value is

A)accurate
B)average
C)precise
D)error

Question 22

A train with a whistle that emits a note of frequency 800 Hz is approaching an observer at speed of 60 m s^-1, the frequency of note heard by observer is {{}}

A)978 Hz
B)980 Hz
C)950 Hz
D)900 Hz

Question 23

Smallest division on a rule is of

A)1 cm
B)1 m
C)1 mm
D)10 cm

Question 24

If the two quantizes are inversely proportional then graph between y and 1/x gives

A)straight line cutting the axis
B)straight line through origin
C)a parabolic curve
D)a hyperbolic curve

Question 25

Systematic errors can be removed by

A)buying new instrument
B)breaking the instrument
C)dusting the instrument
D)recalibrating the instrument