Related Questions

What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?
A Remains constant
B Becomes zero
C Increases exponentially
D None of the above
If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both equal to half the total energy, then the displacement is equal to
A $${\text{A}}$$
B $$\frac{{\text{A}}}{2}$$
C $$\frac{{\text{A}}}{{\sqrt 2 }}$$
D $${\text{A}}\sqrt 2 $$
What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate?
A 0.5
B 1
C 1.5
D 2
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by
A 1 : 2
B 1 : 1
C 2 : 1
D 3 : 1
একটি কণা A বিস্তারে সরল ছন্দিত স্পন্দনে স্পন্দিত হচ্ছে। সাম্যাবস্থা থেকে কত দূরত্বে কণাটির বিভব শক্তি তার মোট শক্তির এক-চতুর্থাংশ হয়? (A particle is executing Simple Harmonic Motion with an amplitude A. At what displacement from the equilibrium position, is the potential energy of the particle one-fourth of its total energy?)
A A/4
B A/2
C A/√2
D A√2
The following particles move with same kinetic energy. Which of them has maximum momentum ?
A Electron
B Proton
C Deutron
D Alpha Particle
50 kg ভরের একটি বস্তুর ভরবেগ 50 kg-m/s হলে এর গতিশক্তি কত হবে? (A 50 kg body has a momentum of 50 kg-m/s. What is its kinetic energy? )
A 2500 J
B 100 J
C 50 J
D 25 J
বল (force) , সরণ (displacement ) ও কাজ (work) এর মধ্যে সম্পর্ক (relationship) হলো
A       W=→F.→S
B   W=FS cosθ 
C →W=→F×→S cosθ    
D A ও B উভয়ই
Which among the following is false about displacement?
A It can be positive, negative or zero
B Displacement is never greater than Distance
C Its SI unit is meter
D It is always positive
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
A Raman spectra
B Absorption spectra
C Emission spectra
D Fluorescence

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