A rocket of initial mass 6000kg ejects gases at a constant rate
of 16 kg/s with the constant relative speed of 11 km/s what is the
acceleration of the rocket one minute after the blast.
Ans. A = 34.92 m/s2
Ques 2. A coil has a resistance of 30 ohm and inductive reactance of
20 ohm at 50 Hz frequency. If an AC source of 200 volt 100 Hz is
connected across the coil then how much current will be in the coil?
Ans. I = 4A
Ques 3. The first member of the Paschen series in the hydrogen
spectrum is of wavelength 18800 angstrom. What is the short
wavelength limit of the Paschen series?
Ans. 7.49 × 10-7
Ques 4. Find the solubility product of BaOH2?
Where (S = 1.73 × 10-14)
Ans. 20.7 × 1042