Physics ICS Part 1 Chapter 8 Online Test

The waves used in radar speed trap are

• Longitudinal A
• Sound wave B
• Micro waves C
• Matter waves D

In transverse waves the particles of medium vibrate

• Along the direction of wave A
• Opposite to direction of wave B
• Perpendicular to direction of wave C
• Slowly D

Sound waves are

• Electromagnetic waves A
• Transverse waves B
• Compressional waves C
• Matter waves D

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

• 1m A
• 2 m B
• 3 m C
• 4 m D

Beats can be heard when difference of frequency is not more than.

• 8 Hz A
• 10 Hz B
• 4 Hz C
• 6 Hz D

If the pressure of a gas is doubled, then speed of sound is.

• Doubled A
• Become half B
• Not affected C
• Increases by four times D

According to Newton's formula, the speed of sound in air at STP is

• 332 ,ms-1 A
• 340 ms-1 B
• 350 ms-1 C
• 280 ms-1 D

In order to produce beats, the two sound waves should have.

• The same amplitude A
• Slightly different amplitude B
• The same frequency C
• slightly different frequencies. D

The speed of sound increases with the increase of in

• Pressure A
• Volume B
• Temperature C
• Density D

When two waves having same frequency traveling in same direction combine, phenomenon is called

• Wave motion A
• Combination of waves B
• Interference C
• Diffraction D

the louder the sound, the greater will be its.

• Speed A
• Frequency B
• Amplitude C
• Wave length D

When two identical waves superimposed, which can change.

• Wave length A
• Frequency B
• Velocity C
• Amplitude D

• 
  A
• 
  B
• 
  C
• 
  D

Speed of sound in vacuum is

• 280 ms-1 A
• 332 ms-1 B
• 333 ms-1 C
• Zero ms-1 D

The speed of sound in air would become double than ots speed at 10 ^oC at a temperature of.

• 313 ^oC A
• 586 ^oC B
• 859 ^oC C
• 899 ^oC D

In stationary waves the points which always remain at rest are.

• Nodes A
• Antinodes B
• Crest C
• Trough D

An oscillating mass-spring system produces

• Sound waves A
• Electromagnetic waves B
• Light waves C
• Periodic waves D