Physics
Write reactions of a nucleus 11X23 when it loses
(a) one proton
(b) one β particle
(c) one α particle
Related Questions
(a) A man standing between two cliffs produces a sound and hears two successive echoes at intervals of 2 s and 5 s respectively. Calculate the distance between the two cliffs. The speed of sounding in the air is 330 ms-1.
(b) Explain, why strings of different thicknesses are provided on a stringed instrument.
Shrey's room have two electric bulbs, these bulbs are connected in series and power supplied by 220 V.
(a) Calculate the total resistance of the circuit.
(b) Calculate the current in the circuit.
(c) Calculate the voltage drop across each bulb.
What is meant by electrical resistance of a conductor? State how resistance of a conductor is affected when
(a) a low current passes through it for a short duration and
(b) a heavy current passes through it for about 30 s.
The diagram below shows a magnetic needle kept just below the conductor AB which is kept in North South direction.
(i) In which direction does the needle deflect when the key is closed ?
(ii) Why is the deflection produced?
(iii) What will be the change in the deflection if the magnetic needle is taken just above the conductor AB ?
(iv) Name one device which works on this principle.