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A second pendulum is a pendulum whose time period is
A small magnet of dipole moment M is kept on the arm of a deflection magnetometer sat in tan A position at a distance of 0.2 m. If the deflection is 60°, the value of M is (BH = 0.4 × 10-4 T)
A substance which changes readily into vapour without heating is called
A substance which readily forms colloidal solution in contact with water is called
A system exhibiting S.H.M. must possess
A television channel is characterised by
A thick paste of cement, sand water is called
A toy rocket ejects 0.05 kg gas per second with a speed of 400 m/s the accelerating force on the rocket is :
A travelling wave passes a point of observation where the time interval between successive crests is 0.2 s. Which of the following is then true?
A vacuum cleaner works on the principle of pressure difference. On the moon it will