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The number of vibrations in two seconds can be expressed as __________ if frequency of vibration is f
NETNUST Entry TestPhysicsOscillations
If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:
NETNUST Entry TestPhysicsOscillations
If a mass of 10 gm is suspended from a spring of $k=9.8 Nm^{-1}$, then the extension will be:
NETNUST Entry TestPhysicsOscillations
A particle is moving along a circular path with uniform speed. Its projection will execute _____ along the ______ of the circle
NETNUST Entry TestPhysicsOscillations
The time taken to complete one vibration is called:
NETNUST Entry TestPhysicsOscillations
When quarter of a cycle is completed, the phase of vibration is:
NETNUST Entry TestPhysicsOscillations
The body oscillates due to _________ accelerates and overshoots the rest position due to ______
NETNUST Entry TestPhysicsOscillations
$\pi$ is the ratio of:
NETNUST Entry TestPhysicsOscillations
Amplitude in SHM is equivalent to _____ in circular motion
NETNUST Entry TestPhysicsOscillations
The graph showing the variation of displacement with time is a:
NETNUST Entry TestPhysicsOscillations
When a body is vibrating, the displacement from mean position:
NETNUST Entry TestPhysicsOscillations
The restoring force is _____ and opposite to that applied force within ______
NETNUST Entry TestPhysicsOscillations
The SI unit of spring constant is identical with that of:
NETNUST Entry TestPhysicsOscillations
When the mass attached to a spring begins to move left or right from the equilibrium position, its P.E:
NETNUST Entry TestPhysicsOscillations
Which one of the following is an example of SHM:
NETNUST Entry TestPhysicsOscillations
The unit of spring constant is:
NETNUST Entry TestPhysicsOscillations
To and fro motion of a body about its mean position is known as:
NETNUST Entry TestPhysicsOscillations
In order to increase the resolution of an Astronomical Telescope
NETNUST Entry TestPhysicsOptical Instruments
The ratio of size of the image to the size of the object is known as
NETNUST Entry TestPhysicsOptical Instruments
The power of a lens is 10 diopters. Its focal length is:
NETNUST Entry TestPhysicsOptical Instruments
How many telephone calls single-mode step Index fiber can carry?
NETNUST Entry TestPhysicsOptical Instruments
In astronomical telescope, which of the following has greater focal length
NETNUST Entry TestPhysicsOptical Instruments
An air bubble in water acts like
NETNUST Entry TestPhysicsOptical Instruments
If a convex lens of focal length F is cut into two identical halves along the lens diameter, the focal length of each half is
NETNUST Entry TestPhysicsOptical Instruments
The magnifying power of telescope is 9 . When it is adjusted for parallel rays, the distance between the objective and eyepiece is 20 cm. The focal lengths of the lenses are
NETNUST Entry TestPhysicsOptical Instruments