The trajectory (or path) of a projectile is_________________?
The trajectory (or path) of a projectile is_________________?
A. straight line
B. parabola
C. hyperbola
D. circle
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Electromagnetic waves emitted from antenna are________________?
Electromagnetic waves emitted from antenna are________________?A. Stationary
B. Longitudinal
C. Transverse
D. All the aboveThe normal ear is the most sensitive in the frequency range___________________?
The normal ear is the most sensitive in the frequency range___________________?A. 20000 to 30000 hertz
B. 10 to 20 hertz
C. 2000 to 4000 hertz
D. 6000 to 8000 hertzWhen two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?A. decreases
B. increases
C. remains unchanged
D. becomes zeroWhich one of the following radiation possesses maximum penetrating power ?
Which one of the following radiation possesses maximum penetrating power ?A. X-rays
B. B-rays
C. γ-rays
D. All have the equal penetrating poweI ^. (j^ x k^) is equal to______________?
I ^. (j^ x k^) is equal to______________?A. 1
B. i^
C. j^
D. k^On loading the prong of a tuning form with wax its frequency____________________?
On loading the prong of a tuning form with wax its frequency____________________?A. increases
B. decreases
C. remains unchanged
D. may increase or decrease