CBSE
Multiple Choice QuestionsFrom the given figure find the frequency of oscillation of the mass m.
A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of e.m.f. generated across the coil during one cycle is
A large horizontal surface moves up and down in S.H.M with an amplitude of 1 cm. If a mass of 10 kg ( which is placed on the surface) is to remain continuously in contact
5 Hz
0.5 Hz
1.5 Hz
10 Hz
Assertion: The amplitude of an oscillating pendulum decreases gradually with time.
Reason: The frequency of the pendulum decreases with time.
if both assertion and reason are true and reason is the correct explanation of assertion
if both assertion and reason are true and the reason is not the correct explanation of the assertion
if assertion is true but reason is false
if both assertion and reason are false statements
Which of the following functions represents a simple harmonic oscillation?
sinωt cosωt
sin2ωt
sinωt + sin2ωt
sinωt sin2ωt
Assertion: In simple harmonic motion, the motion is to and fro and periodic.
Reason: Velocity of the particle ( v) = ω ( where x is the displacement ).
If both the assertion and reason are true and reason is a correct explanation of the assertion.
If both assertion and reason are true but assertion is not a correct explanation of the assertion.
If the assertion is true but the reason is false.
If both assertion and reason are false.
Assertion: The time-period of pendulum, on a satellite orbiting the earth is infinity.
Reason: Time-period of a pendulum is inversely proportional to
If both the assertion and reason are true and reason is a correct explanation of the assertion.
If both assertion and reason are true but assertion is not a correct explanation of the assertion.
If the assertion is true but the reason is false.
If both assertion and reason are false.
A string in a musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is
62.5 cm
40 cm
50 cm
37.5 cm
A boat at anchor is rocked by waves whose crests are 100 m apart and velocity is 25 m/sec. The boat bounces up once in every
2500 s
75 s
4 s
0.25 s
The time period of a simple pendulum is T remaining at rest inside a lift. Find the time period of pendulum when lift starts to move up with an acceleration of g/4
T
T/2
