A mass of 1 kg is thrown up with a velocity of 100 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s, Calculate the velocity of other part:
A capacitor is charged with a battery and energy stored is \(U\). After disconnecting battery another capacitor of same capacity is connected in parallel with it. Then energy stored in each capacitor is:
Two projectiles of same mass and with same velocity are thrown at an angle \(60º\) & \(30º\) with the horizontal, then which quantity will remain same:
For a plane convex lens \((µ = 1.5)\) has radius of curvature 10 cm. It is silvered on its plane surface. Find focal length after silvering:
The frequency order of for \(γ-rays\ (b), X–rays\ (a), UV–rays\ (c)\):
Motion of a particle is given by equation \(S=(3t^3+7t^2+14t+8)\ m\), The value of acceleration of the particle at \(t=1 \ sec\) is:
A charge having \(q/m\) equal to \(10^8 \ c/kg\) and with velocity \(3×10^5 \ m/s \) enters into a uniform magnetic field \(B=0.3 \ tesla\) at an angle \(30º\) with direction of field. Then radius of curvature will be:
Two stationary sources each emitting waves of wave length \(λ\). An observer moves from one source to other with velocity \(u\). Then number of beats heard by him:
The equations of two waves given as \(x=acos\ (ωt + δ)\) and \(y=a cos\ (ωt+α)\), Where \(δ=α+\frac \pi 2\), then resultant wave represent:
