When the temperature of an ideal gas is increased from 27°C to 227°C, its rms speed is changed from 400 metre/sec to vs. The vs is :
516 m/s
450 m/s
310 m/s
746 m/s
To make the frequency double of a spring oscillator, we have to :
reduce the mass to one fourth
quadruple the mass
double the mass
half the mass
A particle executing SHM has amplitude 0.01 m and frequency 60 Hz. The maximum acceleration of the particle is :
D.
Maximum acceleration of particle
= 4 × 0.01 × π2 × (60)2
= 144π2 m/s2
When a wave travels in a medium, the particle's displacement is given by the equation
y = 0.03 sin(2t - 0.01 x)
where x and y are in metre and t in second. The wavelength of the wave is :
200 m
100 m
20 m
10 m
If 300 ml of a gas at 27° C is cooled to 7° C at constant pressure, then its final volume will be
540 mL
350 mL
280 mL
135 mL
When sound waves travel from air to water, which one of the following remains constant?
Time period
Frequency
Velocity
Wavelength
A gas at state A changes to state B through path I and II as shown in figure. The change in internal energy is ΔU1 and ΔU2 respectively. Then :
ΔU1 > ΔU2
ΔU1 < ΔU2
ΔU1 = ΔU2
ΔU1 = ΔU2 = 0
Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field through both coils, if the same current is flown :
1 :
1 : 2
2 : 1
: 1
A coil having N turns carries a current as shown in the figure. The magnetic field intensity at point P is :
zero