What should be the velocity(v) of a sound source moving towards a stationary observer
What should be the velocity(v) of a sound source moving towards a stationary observer so that apparent frequency is double…
7 years ago
MP2002
A liquid boils when its vapour pressure equals
A liquid boils when its vapour pressure equals Options (a) The atmospheric pressure (b) Pressure of 76.0 cm column of…
7 years ago
Two point charge +9e and +e are at 16 cm away from each other.
Two point charge +9e and +e are at 16 cm away from each other. Where should another charge q be…
7 years ago
The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function
The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function of the metal is approximately…
7 years ago
The temperature coefficient of a resistance wire is 0.00125 per degree.
The temperature coefficient of a resistance wire is 0.00125 per degree. The resistance at 300 K is 1 Ω. At…
7 years ago
The order of radius of the nucleus of an atom is
The order of radius of the nucleus of an atom is Options (a) 10⁻¹⁰ m (b) 10⁻¹² m (c) 10⁻¹⁵…
7 years ago
The radius of the first orbit of the hydrogen atom is a₀. The radius of the second orbit
The radius of the first orbit of the hydrogen atom is a₀. The radius of the second orbit will be…
7 years ago
The voltage of an a.c.supply varies with time (t) as V=120 sin 100 πt the maximum voltage
The voltage of an a.c.supply varies with time (t) as V=120 sin 100 πt cos 100 πt the maximum voltage…
7 years ago
Periodic time of a satellite revolving above Earth’s surface at a height equal to R,
Periodic time of a satellite revolving above Earth's surface at a height equal to R, radius of Earth is (g=acceleration…
7 years ago
A particle doing SHM has amplitude=4 cm and time period = 12 sec. The ratio between times
A particle doing SHM has amplitude=4 cm and time period = 12 sec. The ratio between times taken by it…
7 years ago