Q. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

View solution

Q. One thousand microns is equal to

View solution

Q. Sound travels at the fastest speed in

View solution

Q. oil raise up the wick in a lamp. The principle involves

View solution

Q. Superconductors are substances which

View solution

Q. Light travels at the fastest speed in

View solution

Q. Railway tracks are banked on curves

View solution

Q. On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because

View solution

Q. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?

View solution

Q. Intensity of sound at a point is ____ its distance from the source.

View solution

Q. Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

View solution

Q. Radio telescopes are better than optical telescopes because

View solution

Q. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

View solution

Q. Out of the following pairs, which one does not have identical dimension?

View solution

Q. Mercury is commonly used as a thermometric fluid rather than water because

View solution

Q. Optical fibre works on the

View solution

Q. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

View solution

Q. Supersonic plane fly with the speed

View solution

Q. Mach number is used in connection with the speed of

View solution

Q. On a stationary sail boat, air is blown from a fan attached to the boat. The boat

View solution