Physics-
General
Easy
Question
The current flowing through the zener diode in fig. is-
- 20 mA
- 25 mA
- 15 mA
- 5 mA
The correct answer is: 5 mA
Related Questions to study
Physics-
Two junction diodes one of germanium (Ge) and other of silicon (Si) are connected as shown in figure to a battery of emf 12 V and a load resistance 10 k 
. The germanium diode conducts at 0.3 V and silicon diode at 0.7 V. When a current flows in the circuit, the potential of terminal Y will be-
Two junction diodes one of germanium (Ge) and other of silicon (Si) are connected as shown in figure to a battery of emf 12 V and a load resistance 10 k . The germanium diode conducts at 0.3 V and silicon diode at 0.7 V. When a current flows in the circuit, the potential of terminal Y will be-
Physics-General
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If VA and VB denote the potentials of A and B, then the equivalent resistance between A and B in the adjoint electric circuit is-
If VA and VB denote the potentials of A and B, then the equivalent resistance between A and B in the adjoint electric circuit is-
Physics-General
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Which is the wrong statement in following sentence? A device in which P and N type semiconductors are used is more useful then a vacuum tube because-
Which is the wrong statement in following sentence? A device in which P and N type semiconductors are used is more useful then a vacuum tube because-
Physics-General
Chemistry-
This reaction is called
This reaction is called
Chemistry-General
Chemistry-
In the following compounds :
I) 
II) 
III) 
IV) 
the order of basicity is
In the following compounds :
I)
II)
III)
IV)
the order of basicity is
Chemistry-General
Chemistry-
Chemistry-General
Chemistry-
The correct order of basicities of the following compounds is
1) 
2) 
3) 
4) 
The correct order of basicities of the following compounds is
1)
2)
3)
4)
Chemistry-General
Chemistry-
The following reaction is
The following reaction is
Chemistry-General
Chemistry-
The products A, B and C in the following sequence of reactions respectively are
The products A, B and C in the following sequence of reactions respectively are
Chemistry-General
Physics-
An armoured car 2 m long and 3 m wide is moving at 10 ms–1 when a bullet hits it in a direction making an angle 
with the length of the car as seen by a stationary observer. The bullet enters one edge of the car at the corner and passes out at the diagonally opposite corner. Neglecting any interaction between the car and the bullet, the time for the bullet to cross the car is
An armoured car 2 m long and 3 m wide is moving at 10 ms–1 when a bullet hits it in a direction making an angle with the length of the car as seen by a stationary observer. The bullet enters one edge of the car at the corner and passes out at the diagonally opposite corner. Neglecting any interaction between the car and the bullet, the time for the bullet to cross the car is
Physics-General
Physics-
A man is running with constant speed along a circular path of radius 2 
m. He completes 1 round in 10 second. Find average velocity in 20 seconds
A man is running with constant speed along a circular path of radius 2 m. He completes 1 round in 10 second. Find average velocity in 20 seconds
Physics-General
Physics-
A projectile is fired from the surface of level ground at an angle f0 above the horizontal. Then elevation angle tan
is
A projectile is fired from the surface of level ground at an angle f0 above the horizontal. Then elevation angle tan is
Physics-General
Physics-
A particle is projected from the ground with an initial speed of v at an angle with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is
A particle is projected from the ground with an initial speed of v at an angle with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is
Physics-General
Physics-
The resultant of velocity of two cars moving with equal speeds, Ratio of magnitude 
, when the direction of either car is reversed. The angle between the direction of cars is
The resultant of velocity of two cars moving with equal speeds, Ratio of magnitude , when the direction of either car is reversed. The angle between the direction of cars is
Physics-General
Physics-
The displacement of a particle moving in one dimension is given by 
where 
is in meter and 
in second. The displacement, when the velocity is zero is
The displacement of a particle moving in one dimension is given by where is in meter and in second. The displacement, when the velocity is zero is
Physics-General
