A boat at anchor is rocked by waves, whose crests are 100m apart and velocity is 25m/s. The boat bounces up once in every ____

The waves produced by a motor boat sailing in water are __________

Principle of superposition can be applied to

Two waves with phase difference 180° have resultant of amplitude

The equation of wave is given by
y=10sin⁡(2πt/30+α)
If the displacement is 5cm at t=0, then the total phase at t=7.5s will be ______

Grating element is equal to

Travelling waves of wavelength 20 cm are created in the air columns in a closed pipe P and an open pipe Q. The lengths of the pipes are shown.



In which pipe or pipes are stationary waves formed

A double-slit interference of green-coloured light was set up as shown and interference fringes are formed on the screen.

Which change would increase the distance between adjacent fringes?

With diffraction grating, the angles are

A wire is stretched over two supports, Q and R, a distance 4x apart. Three light pieces of paper rest on the wire

When the wire is made to vibrate at one particular frequency, the middle piece of paper stays on, but the others fall off the wire.
The wavelength of the vibration produced on the wire?

Splitting of white light in to constituent colors is called

A transverse wave passes through a string with the equation
y=10sinπ(0.02x-2t)
Where x is in metres and t in seconds. What is the maximum velocity of the particles in wave motion?

A taunt wire is clamped at two points 1.0m apart. It plucked near one end. Which are the three longest wavelength present on the vibrating wire?

Which of the following is always true for a stationary wave?

For a wave propagating in a medium, identify the property that is independent of the others.

The mercury spectrum contains two intense yellow lines with wavelengths of 577.0 nm and 579.1 nm respectively. Light from a mercury lamp is incident normally on a diffraction grating ruled with 4300 lines per centimetre. To distinguish the two yellow lines clearly, it is desirable that there should be an angular separation of at least 0.30° between the two lines. Which order of diffraction can be used?

The plane wave is described by the equation
y=3cos⁡(x/4-10t-π/2),
Where c is in meters and t in seconds. The maximum velocity of the particles of the medium due to this is?

In young double slit experiment, the wavelength of incident beams should be

Which is different from others by units?

For listening radio in cars, external radio aerials are used because

If two waves are in phase and have the same amplitude then resultant wave has

A double-slit interference experiment is set up as shown.

Fringes are formed on the screen which is 40.0 cm away. The distance between the slits is 9.0 cm
apart. The microwave source has a wavelength of 2.0 cm and intensity of I.
What is the resultant intensity at X?

For destructive interference, the path difference is

If two sound waves having a phase difference of 60°, then they will have a path difference of _____

Microwaves have wavelength of about