Options:
- A. Longitudinal
- B. Transverse
- C. Periodic
- D. both A and C
View Answer
D. both A and C
Physics
The waves that require a material medium for their propagation are called__________________?
Options:
- A. matter waves
- B. electromagnetic waves
- C. carrier waves
- D. mechanical waves
View Answer
D. mechanical waves
Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?
Options:
- A. isothermal law
- B. adiabatic law
- C. isochoric law
- D. all of the above
View Answer
B. adiabatic law
When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
Options:
- A. decreases
- B. increases
- C. remains unchanged
- D. becomes zero
View Answer
C. remains unchanged
The beats frequency (sensible) for a human car is _____________________?
Options:
- A. 42Hz
- B. 7 Hz
- C. 256Hz
- D. 262Hz
View Answer
B. 7 Hz
If stretching force T of wire increases, then its frequency __________________?
Options:
- A. decreases
- B. increases
- C. remains the same
- D. any of above
View Answer
B. increases
According to Newton sound travel in air under the conditions of_____________________?
Options:
- A. adiabatic
- B. isothermal
- C. isobaric
- D. isochoric
View Answer
B. isothermal
It is possible to distinguish between transverse and longitudinal waves form the property of __________________?
Options:
- A. refraction
- B. polarization
- C. interference
- D. diffraction
View Answer
B. polarization
Motorcycle safety helmet extends the time of collision hence decreasing the________________?
Options:
- A. chance of collision
- B. force acting
- C. velocity
- D. impulse
View Answer
D. impulse
Taking off rocket can be explained by __________________?
Options:
- A. 1st law of motion
- B. 2nd law of motion
- C. Law of conservation of momentum
- D. law of conservation of energy
View Answer
C. Law of conservation of momentum