Practice Set 1
In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separation between P and Q is 5 m and the phase of P is ahead of that of Q by 90°. A, B and C are three distinct points of observation, each equidistant from the midpoint of PQ. The intensities of radiation at A, B, C will be in the ratio
19
Sep
In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separation between P and Q is 5 m and the phase of P is ahead of that of Q by 90°. A, B and C are three distinct points of observation, each equidistant from the [...]
Tags:
B ,
B and C are three distinct points of observation ,
C will be in the ratio ,
each equidistant from the midpoint of PQ. The intensities of radiation at A ,
In the figure below ,
P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separation between P and Q is 5 m and the phase of P is ahead of that of Q by 90°. A ,
A sound source S is moving along a straight track with speed v, and is emitting sound of frequency v0 (see figure). An observer is standing at a finite distance, at the point O, from the track. The time variation of frequency heard by the observer is best represented by (t0 represents the instant when the distance between the source and observer is minimum)
19
Sep
A sound source S is moving along a straight track with speed v, and is emitting sound of frequency v0 (see figure). An observer is standing at a finite distance, at the point O, from the track. The time variation of frequency heard by the observer is best represented by (t0 represents the instant when [...]
Tags:
A sound source S is moving along a straight track with speed v ,
and is emitting sound of frequency v0 (see figure). An observer is standing at a finite distance ,
at the point O ,
from the track. The time variation of frequency heard by the observer is best represented by (t0 represents the instant when the distance between the source and observer is minimum) ,
A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of 0.5 mm is noticed on the pitch scale. The nature of zero error involved, and the least count of the screw gauge, are respectively.
19
Sep
A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of 0.5 mm is noticed on the pitch scale. The nature of zero error involved, and the least count of [...]
Tags:
a displacement of 0.5 mm is noticed on the pitch scale. The nature of zero error involved ,
A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking ,
and the least count of the screw gauge ,
are respectively ,
prior to use. Upon one complete rotation of the circular scale ,
A thin rod of mass 0.9 kg and length 1 m is suspended, at rest, from one end so that it can freely oscillate in the vertical plane. A particle of move 0.1 kg moving in a straight line with velocity 80 m/s hits the rod at its bottom most point and sticks to it (see figure). The angular speed (in rad/s) of the rod immediately after the collision will be ____ .
19
Sep
A thin rod of mass 0.9 kg and length 1 m is suspended, at rest, from one end so that it can freely oscillate in the vertical plane. A particle of move 0.1 kg moving in a straight line with velocity 80 m/s hits the rod at its bottom most point and sticks to it [...]
The surface of a metal is illuminated alternately with photons of energies E1 = 4 eV and E2 = 2.5 eV respectively. The ratio of maximum speeds of the photoelectrons emitted in the two cases is 2. The work function of the metal in (eV) is _____.
19
Sep
The surface of a metal is illuminated alternately with photons of energies E1 = 4 eV and E2 = 2.5 eV respectively. The ratio of maximum speeds of the photoelectrons emitted in the two cases is 2. The work function of the metal in (eV) is _____. The correct match between the entries in table [...]
A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum angle of deviation (in degrees) is close to N/10. Value of N is ____ .
19
Sep
A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum angle of deviation (in degrees) is close to N/10. Value of N is ____ . A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum [...]
Nitrogen gas is at 300°C temperature. The temperature (in K) at which the rms speed of a H2 molecule would be equal to the rms speed of a nitrogen molecule, is ___ . (Molar mass of N2 gas 28 g).
19
Sep
Nitrogen gas is at 300°C temperature. The temperature (in K) at which the rms speed of a H2 molecule would be equal to the rms speed of a nitrogen molecule, is ___ . (Molar mass of N2 gas 28 g). is ___ . (Molar mass of N2 gas 28 g). Nitrogen gas is at 300°C [...]
A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts from rest and moves in a straight line. After 9 seconds, the body has moved a distance (in m) …………..
19
Sep
A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts from rest and moves in a straight line. After 9 seconds, the body has moved a distance (in m) ………….. A body of mass 2 kg is driven by an engine delivering a constant [...]
An iron rod of volume 10^–3 m^3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod will be
19
Sep
An iron rod of volume 10^–3 m^3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod will be An iron rod of volume 10^–3 m^3 and relative permeability 1000 is placed as [...]
In the circuit, given in the figure currents in different branches and value of one resistor are shown. Then potential at point B with respect to the point A is
19
Sep
In the circuit, given in the figure currents in different branches and value of one resistor are shown. Then potential at point B with respect to the point A is given in the figure currents in different branches and value of one resistor are shown. Then potential at point B with respect to the point [...]