Answer:
Explanation:
If angle of incidence and angle of refraction be i and r respectively ,
sini / sinr = μ ( refractive index )
sin r = sin i / μ
If angle of incidence i be constant and medium becomes denser that means μ becomes higher in value , the value of sin r will be low ( because of increase in value of denominator )
As sin r decreases , r also decreases also.
Hence when medium becomes denser , angle of refraction becomes less .
Answer:
Explanation:
A block is moving with constant velocity action the action of 3 N force.
Statement A: False, as the block is moving with constant velocity so net force is zero.
Statement B: False, as the net force is zero.
Statement C: True, the friction force is equal to the applied force.
Statement D: True: The net force is zero so that the block is moving with constant velocity.
Statement E: True, the net force is zero so the acceleration is also zero.
Answer:
The room with the lower temperature
Explanation:
Using
PV=nRT
Since both the rooms same volume and are connected, so they will have same pressure
PV=nRT=constant
nT=Constant/R=constant
If T is more n has to be less
Thus, lower the temperature, more the number molecules.
Answer:
b) 4781 N
Explanation:
Because there is a redius do this question is talking about the acceleration force which= mv^2/r
so a=15^2/80=2.8125 m^2/s
so the force will be = m.a
F =1700×2.8125=4781.25 N
