NEET News

### 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 […]

### 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

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) […]

1 2 3 4 5