01 A repetition of sound produced by reflection is called:

RRB PYQ MCQ

02 At 25°C: A. Sound speed in steel is 5960 m/s. B. Sound…

RRB PYQ MCQ

03 Repeated reflection resulting in persistence of sound is called:

RRB PYQ MCQ

04 Sound travels fastest in which of these?

RRB PYQ MCQ

05 A boy claps near a rock and hears an echo after 3…

RRB PYQ MCQ

06 A sound wave has frequency 4 kHz and wavelength 40 cm. How…

RRB PYQ MCQ

07 What is repeated reflection from the walls of a large hall that…

RRB PYQ MCQ

08 In which medium does sound travel fastest among these options?

RRB PYQ MCQ

09 When sound is reflected from a surface at least approximately 17 m…

RRB PYQ MCQ

10 A sound wave has frequency 50 Hz and wavelength 4 m. What…

RRB PYQ MCQ