Question :

Sound waves in air are


A) transverse
B) longitudinal
C) electromagnetic
D) polarised

Answer : B

Description :



Related Questions - 1


Let a thin capillary tube be replaced with another tube of insufficient length then, we find water


A) will overflow
B) will not rise
C) depressed
D) change its meniscus

View Answer

Related Questions - 2


Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to


A) the heating effect of current alone
B) hysteresis loss alone
C) both the heating effect of current and hysteresis loss
D) intense sunlight at noon

View Answer

Related Questions - 3


It is more difficult to walk on a sandy road than on a concrete road because


A) sand is soft and concreter is hard
B) the friction between sand and feet is less than that between concrete and feet
C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth

View Answer

Related Questions - 4


Pa(Pascal) is the unit for


A) thrust
B) pressure
C) frequency
D) conductivity

View Answer

Related Questions - 5


It is easier to roll a stone up a sloping road than to lift it vertical upwards because


A) work done in rolling is more than in lifting
B) work done in lifting the stone is equal to rolling it
C) work done in both is same but the rate of doing work is less in rolling
D) work done in rolling a stone is less than in lifting it

View Answer