The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M)HCl will be:
The coagulating power of electrolytes having ions Na+,Al3+andBa2+ for arsenic sulphide sol increases in the order:
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R?
The period of oscillation of a simple pendulum is T=2πgL. Measured value of L is 20.0 cm known to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using wrist watch of 1 s resolution. The accuracy in the determination of g is :
Let a and b be the roots of equation px2+qx+r=0,p=0.. If p, q, r are in A.P. and α1+β1=4, then the value of ∣α−β∣ is
A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad in parallel with a load resistance 100 kilo ohm. Find the maximum modulated frequency which could be detected by it.