Related Questions

Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?
A Sphere
B Cube
C Cylinder (L/D = 1)
D Raschig rings
Virus contains double stranded genome in following virus
A Adeno virus
B Pox virus
C Reo virus
D Parvo virus
E Rabies virus
The name of the strand of virus, known as 'swine flu' virus, that has been declared as a pandemic worldwide is :
A H1N2
B H2N2
C H2N1
D H1N1
You suspect a virus has entered your computer. What will not be affected by the virus?
A CMOS
B Boot sector
C Floppy disks
D Program files
E None of the above
A computer virus that actively attacks an anti-virus program or programs in an effort to prevent detection is...
A Worm
B Retrovirus
C Trojan
D Ghost virus
একটি কণা t = 0 সময়ে স্থির অবস্থা থেকে যাত্রা শুরু করে। কণাটির ওপর প্রযুক্ত লব্ধি বল, সময় t এর সমানুপাতিক। কণাটির গতিশক্তি নিচের কোনটির সমানুপাতিক হবে? (A particle starts from rest at t = 0. The net force acting on the particle is proportional to time t. Its kinetic energy is proportional to which one of the following?)
A t2
B t3
C t
D t4
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?
A Circle
B Parabolic
C Great circle
D Hyper–parabolic
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where $$\omega $$ = Displacement of the particle from mean position)
A $$\omega \sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$
B $$\omega \sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$
C $${\omega ^2}\sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$
D $${\omega ^2}\sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion and y = Displacement of the particle from mean position.)
A $$\omega \sqrt {{{\text{y}}^2} - {{\text{r}}^2}} $$
B $$\omega \sqrt {{{\text{r}}^2} - {{\text{y}}^2}} $$
C $${\omega ^2}\sqrt {{{\text{y}}^2} - {{\text{r}}^2}} $$
D $${\omega ^2}\sqrt {{{\text{r}}^2} - {{\text{y}}^2}} $$
Periodic time of a particle moving with simple harmonic motion is the time taken by the particle for
A Half oscillation
B Quarter oscillation
C Complete oscillation
D None of these

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