Answer : The correct option is, (B) 
Explanation : Given,
Mass of proton = 
Speed of proton = 0.93 c
Formula used for relativistic momentum of the proton is:

where,
p = relativistic momentum of the proton
= mass of proton
v = speed of proton
c = speed of light = 
Now put all the given values in the above formula, we get:




Therefore, the relativistic momentum of the proton is, 
Answer: 4
Explanation:
when energy is greater then frequency should increase and wavelength should decrease.
Therefore answer is 4
Answer:
Explanation:
check attached image for figure, there is supposed to be a figure for this question containing a distance(height of collar at position A) but i will assume 0.2m or 200mm
Consider the energy equilibrium of the system

Here, F is the force acting on the collar,
is the height of the collar at position A, m is the mass of the collar C, g is the acceleration due to gravity,
is the velocity of the collar at position B, and
is the velocity of the collar at A
Substitute 14.4N for F, 0.2m for
, 1.5kg for m,
for g and 0 for 

Therefore, the velocity at which the collar strikes the end B is 4.412m/s