Infinite number of masses, each 1 kg, are placed along the x-axis
Infinite number of masses, each 1 kg, are placed along the x-axis at x= ±1 m, ±2 m, ±4 m, ±8 m, ±16 m ……. The magnitude of the resultant gravitational potential in terms of […]
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A capacitor of capacitance value 1 μF is charged to 30 V and the battery
A capacitor of capacitance value 1 μF is charged to 30 V and the battery is then disconnected. If it is connected across a 2 μF capacitor, the energy lost by the system is
Two bodies A and B have masses 20 Kg and 5 Kg respectively. Each one is acted
Two bodies A and B have masses 20 Kg and 5 Kg respectively. Each one is acted upon by a force of 4 kg wt. If they acquire the same kinetic energy in times tᴀ […]
The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
Options
(a) 2 (b) 2√2 (c) 4 (d) 2√3
Correct Answer:
2√3
Explanation:
No explanation available. Be the first to write the explanation […]
The period of a simple pendulum inside a stationary lift is T. The lift accelerates
The period of a simple pendulum inside a stationary lift is T. The lift accelerates upwards with an acceleration of g/3. The time period of pendulum will be
Options
(a) √2 T (b) […]
A satellite is revolving around the earth with a kinetic energy E. The minimum
A satellite is revolving around the earth with a kinetic energy E. The minimum addition of kinetic energy needed to make it escape from its orbit is
Options
(a) 2E (b) 2/E (c) […]
A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall. The driver sounds a horn of frequency 165 Hz. If the speed of sound in air is 335 ms⁻¹, the numebr […]
If the angle of minimum deviation is 60° for an equilateral prism, then the refractive
If the angle of minimum deviation is 60° for an equilateral prism, then the refractive index of the material of the prism is
Options
(a) 1.41 (b) 1.5 (c) 1.6 (d) 1.73
Correct […]
A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
A common emitter amplifier gives an output of 3 V for an input of 0.01 V. If β of the transistor is 100 and the input resistance is 1 kΩ, then the collector resistance is […]
A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass 16g. If the trigger is pulled,the velocity of the ball is
Options
(a) 50 ms⁻¹ (b) […]