Physics-
General
Easy
Question
A transverse wave is passing through a light string shown in the figure The equation of wave is 
The area of crosssection of string is A and density is ρ The hanging mass is
- A
The correct answer is:
Related Questions to study
physics-
For the given combination of gates, if the logic states of inputs A, B, C are as follows A = B = C = 0 and A = B = 1, C = 0 then the logic states of output D are
For the given combination of gates, if the logic states of inputs A, B, C are as follows A = B = C = 0 and A = B = 1, C = 0 then the logic states of output D are
physics-General
physics-
The truth table shown in figure is for
The truth table shown in figure is for
physics-General
physics-
A truth table is given below. Which of the following has this type of truth table
A truth table is given below. Which of the following has this type of truth table
physics-General
physics-
The combination of ‘NAND’ gates shown here under (figure) are equivalent to
The combination of ‘NAND’ gates shown here under (figure) are equivalent to
physics-General
physics-
The following truth table corresponds to the logic gate
The following truth table corresponds to the logic gate
physics-General
physics-
Given below are four logic gate symbol (figure). Those for OR, NOR and NAND are respectively
Given below are four logic gate symbol (figure). Those for OR, NOR and NAND are respectively
physics-General
physics-
Given below are symbols for some logic gates
The XOR gate and NOR gate respectively are
Given below are symbols for some logic gates
The XOR gate and NOR gate respectively are
physics-General
chemistry-
Degree of dissociation of CH3 COOH and NH4OH are the same. If 0.01 M solution of CH3 COOH has pH=4.0; then pH of 0.01 M NH4OH will be
Degree of dissociation of CH3 COOH and NH4OH are the same. If 0.01 M solution of CH3 COOH has pH=4.0; then pH of 0.01 M NH4OH will be
chemistry-General
physics-
A wave pulse on a string has the dimension shown in figure The wave speed is 
If point O is a free end The shape of wave at time 
is
A wave pulse on a string has the dimension shown in figure The wave speed is If point O is a free end The shape of wave at time is
physics-General
physics-
A magnetic field (B), uniform between two magnets can be determined measuring the induced voltage in the loop as it is pulled through the gap at uniform speed 20 m/sec. Size of magnet and coil is 
and 
as shown in figure. The correct variation of induced emf with time is : (Assume at t = 0, the coil enters in the magnetic field)
A magnetic field (B), uniform between two magnets can be determined measuring the induced voltage in the loop as it is pulled through the gap at uniform speed 20 m/sec. Size of magnet and coil is and as shown in figure. The correct variation of induced emf with time is : (Assume at t = 0, the coil enters in the magnetic field)
physics-General
physics-
A metallic ring of mass m and radius r with a uniform metallic spoke of same mass m and length r is rotated about its axis with angular velocity in a perpendicular uniform magnetic field B as shown. If the central end of the spoke is connected to the rim of the wheel through a resistor R as shown. The resistor does not rotate, its one end is always at the center of the ring and other end is always in contact with the ring. A force F as shown is needed to maintain constant angular velocity of the wheel. F is equal to (The ring and the spoke has zero resistance)
A metallic ring of mass m and radius r with a uniform metallic spoke of same mass m and length r is rotated about its axis with angular velocity in a perpendicular uniform magnetic field B as shown. If the central end of the spoke is connected to the rim of the wheel through a resistor R as shown. The resistor does not rotate, its one end is always at the center of the ring and other end is always in contact with the ring. A force F as shown is needed to maintain constant angular velocity of the wheel. F is equal to (The ring and the spoke has zero resistance)
physics-General
physics-
A conducting ring of radius r with a conducting spoke is in pure rolling on a horizontal surface in a region having a uniform magnetic field B as shown, v being the velocity of the centre of the ring. Then the potential difference 
is –
A conducting ring of radius r with a conducting spoke is in pure rolling on a horizontal surface in a region having a uniform magnetic field B as shown, v being the velocity of the centre of the ring. Then the potential difference is –
physics-General
physics-
AB and CD are fixed conducting smooth rails placed in a vertical plane and joined by a constant current source at its upper end. PQ is a conducting rod which is free to slide on the rails. A horizontal uniform magnetic field exists in space as shown. If the rod PQ is released from rest then
AB and CD are fixed conducting smooth rails placed in a vertical plane and joined by a constant current source at its upper end. PQ is a conducting rod which is free to slide on the rails. A horizontal uniform magnetic field exists in space as shown. If the rod PQ is released from rest then
physics-General
physics-
AB is a resistance less conducting rod which forms a diameter of a conducting ring of radius r rotating in a uniform magnetic field B as shown. The resistors 
and 
do not rotate. Then current through the resistor R1 is
AB is a resistance less conducting rod which forms a diameter of a conducting ring of radius r rotating in a uniform magnetic field B as shown. The resistors and do not rotate. Then current through the resistor R1 is
physics-General
physics-
A uniform magnetic field of induction B is confined to a cylindrical region of radius R. The magnetic field is increasing at a constant rate of 
(tesla/second). An electron of charge q, placed at the point P on the periphery of the field experiences an acceleration:
A uniform magnetic field of induction B is confined to a cylindrical region of radius R. The magnetic field is increasing at a constant rate of (tesla/second). An electron of charge q, placed at the point P on the periphery of the field experiences an acceleration:
physics-General
