The velocity of propagation of sound waves in a diatomic gas is
Greater than the molecular weight of the mass
Lesser than the speed of sound in a triatomic gas of the same molecular weight
Independent of the molecular weight of the mass
Smaller than the molecular weight of the mass
The oil in a wick rises up due to
Pressure difference
Capillary action
Low viscosity of oil
Gravitational force
The period of revolution of a geostationary satellite is
12 h
1 day
30 days
365 days
The position x (in meters) of a car moving on a straight road varies with time t (in seconds)as x=3t+5.
3 m/s
4 m/s
5 m/s
8 m/s
The potential energy of a system in the state of unstable equilibrium is
Maximum
Minimum
Kx2
Zero
The rectangular components of force 5 dynes are
3 and 4 dynes
2.5 and 25 dynes
1 and 2 dynes
2 and 3 dynes
The x and y coordinates of a particle at any time t are given by
X = 5t + t2 and y = 5t
Where x and y are in metre and t in seconds. The acceleration of particle at t = 5s is
Zero
8 ms-2
20 ms-2
40 ms-2
Two identical cylindrical vessels with their bases at same level contains a liquid of density d. the height of the liquid in one vessel is h1 and that in the other vessel is h2. The area of either base is A. the work done by gravity in equalizing the levels when the two vessels are connected is:
(h1- h2)gd
(h1- h2)gAd
(h1- h2)2gd
(h1- h2)2gAd
Which of the following cannot be the resultant of the vectors of magnitude 5 and 10?
7
8
5
2
If the earth is assumed to be a homogenous sphere and if, somehow, it contracts to half its present size, the duration of the day will be
6 h
12 h
24 h
48 h