Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

The plates of a parallel plate capacitor have an area of 90 cm 2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. Then the energy stored ( in j/mn) in teh capacitor is The work done in increasing the potential of a capacitor from [...]

A police car moving at 22 m/s chases a motorcyclist. The policeman sounds his horn of frequency 176 Hz, while both of them move towards a stationary siren of frequency 164 Hz. A police car moving at 22 m/s chases a motorcyclist. The policeman sounds his horn of frequency 176 Hz while both of them [...]

A person speaking normally produces a sound of intensity 40 dB at a distance of 1 m. If the threshold intensity for reasonable audibility is 20 dB, the maximum distance at which A person speaking normally produces a sound of intensity 40 dB at a distance of 1 m. If the threshold intensity for reasonable [...]

Two consenders C1 nad C2 in a circuit are joined as shown in figure. The potential of points A is V1 and that of B is V2 . The potential of point D will be Two consenders C1 nad C2 in a circuit are joined as shown in figure. The potential of points A is [...]

A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A records a frequency of 5.5 kHz while the train approaches A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A records [...]

In figure, given C1 = 3 muF , C2 = 5 muF , C3 = 9muF , nad C4 = 13 muF. what is teh potential difference between points A and B ? C2 = 5 muF C3 = 9muF given C1 = 3 muF In figure nad C4 = 13 muF. what is teh [...]

A train moves towards a stationary observer with a speed of 34 m/s. The train sounds a whistle and its frequency registered by the observer is f1. If the train’s speed is reduced A train moves towards a stationary observer with a speed of 34 m/s. The train sounds a whistle and its frequency registered [...]

The frequency of a radar is 780 MHz. After getting reflected from an approaching aeroplane, the apparent frequency is more than the actual frequency by 2.6 kHz. The aeroplane the apparent frequency is more than the actual frequency by 2.6 kHz. The aeroplane The frequency of a radar is 780 MHz. After getting reflected from [...]

The difference between the apparent frequencies of a source of sound as perceived by a stationary observer during its approach and recession is 2% of the actual frequency of the source. The difference between the apparent frequencies of a source of sound as perceived by a stationary observer during its approach and recession is 2% [...]

The driver of a car approaching a vertical wall notices that the frequency of the horn of his car changes from 400 Hz to 450 Hz after being reflected from the wall. Assuming The driver of a car approaching a vertical wall notices that the frequency of the horn of his car changes from 400 [...]