Which of the following expression is constant for a freely falling body:
a)mgh – ½mv^2
b)mgh + ½mv^2
c)mgh + mv^2
d)mgh – mv^2
In beta positive decay, the nuclear number is:
a)Instable
b)Conserved
c)Not conserved
d)Stable
The property of the system that does not change during adiabatic change is:
a)Temperature
b)Pressure
c)Volume
d)Amount of heat
Longitudinal waves exhibit:
a)Polarization
b)Phenomena of superposition of waves
c)Particle nature
d)Property of energy transmission in space
Which of the following are the application of Doppler’s effect:
a)Sending radar signals
b)Measuring the speed of automobile
c)Hologram technology
d)Determining speed of light in mediums
Due to sudden rain, which of the following is true for the car moving on the road:
a)Force of engine decreases
b)Direction of motion will be effected
c)Linear momentum increases
d)Balance Will not be maintained
Which law has a graph similar to the graph of isothermal process:
a)Boyle’s law
b)Charles law
c)Avogadro’s law
d)Law of heat exchange
The ratio between linear velocity and radius equals to:
a)Angular displacement
b)Angular momentum
c)Angular velocity
d)Angular acceleration
A wheel of bike rotates from rest and achieves 6.28 radian/sec in 2 seconds. What will be its angular acceleration:
a)1.5 rad/sec^2
b)6.28 rad/sec^2
c)3.14 rad/sec^2
d)1 rad/sec^2
1 radian is equals to:
a)5.73°
b)0.573°
c)573°
d)57.3°
