Grade X Physics (Nov)

In which wave is a longitudinal wave?

• Water waves

• Light waves

• Microwaves

• Sound waves

The spreading of wave near an obstacle is called:

• Reflection

• Refraction

• Diffraction

• None of these

The reciprocal of the time period is:

• Wavelength

• Frequency

• Crests

• Troughs

The S.I unit of frequency is:

• Meter

• Kg

• Hertz

• Second

If the frequency of the wave is 2 Hz with a wavelength of 2 m, then the wave speed is:

• 4 m/s

• 0 m/s

• 3 m/s

• 5 m/s

The time period of second's pendulum is:

• 1 sec

• 2 sec

• 3 sec

• 4 sec

Which is not a characteristic of wave?

• Amplitude

• Period

• Mass

• Velocity

Oscillations are damped due to presence of:

• Linear motion

• Restoring force

• frictional force

• Mechanical force

In the ball and bowl system, the mean position is at:

• The earth

• Floor of the bowl

• Center of the bowl

• Extreme position

The speed of sound through vacuum is:

• 331 m/s

• 335 m/s

• 340 m/s

• 0 m/s