In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest
point reached is T. The vertical component of acceleration of stone is:
The half-life of a certain element is 3.5 days at STP. If the temperature is doubled and
pressure is reduced to half then half-life of the same element will be:
The electron is a cathode-ray tube are accelerated from cathode to anode by a potential differenceof
2000 V. If this p.d is increased to 8000 V, the electrons will arrive at the anode with:
Between the plates of a parallel plate condenser there is 1mm thick paper of dielectric constant 4. Itis
charged at 100 volt. The electric field in volt/meter between the plates of the capacitor is: