Physics-
General
Easy
Question
The waves which can travel directly along surface of the earth are known as
- ground waves
- X–rays
–rays
- sky waves
–rays
The correct answer is: ground waves
Related Questions to study
Physics-
Hertz produced electromagnetic wave by using
Hertz produced electromagnetic wave by using
Physics-General
Physics-
For the given circuit shown in fig, to act as full wave rectifier, a.c. input should be connected across ........and........the d.c. output would appear across........and........
For the given circuit shown in fig, to act as full wave rectifier, a.c. input should be connected across ........and........the d.c. output would appear across........and........
Physics-General
Physics-
Two identical P-N junction may be connected in series with a battery in three ways (fig below). The potential drops across the two P-N junction are equal in-
Two identical P-N junction may be connected in series with a battery in three ways (fig below). The potential drops across the two P-N junction are equal in-
Physics-General
Physics-
If a, b, c, d are inputs to a gate and x is its output, then, as per the following time graph, the gate is :
If a, b, c, d are inputs to a gate and x is its output, then, as per the following time graph, the gate is :
Physics-General
Physics-
Identify the semiconductor devices whose characteristics are given below, in the order (A), (B), (C), (D) :
Identify the semiconductor devices whose characteristics are given below, in the order (A), (B), (C), (D) :
Physics-General
Physics-
Truth table for system of four NAND gates as shown in figure is :
Truth table for system of four NAND gates as shown in figure is :
Physics-General
Physics-
A p-n junction (D) shown in the figure can act as a rectifier. An alternating current source (V) is connected in the circuit. 
The current (I) in the resistor (R) can be shown by:
A p-n junction (D) shown in the figure can act as a rectifier. An alternating current source (V) is connected in the circuit. The current (I) in the resistor (R) can be shown by:
Physics-General
Physics-
The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as shown. Pick out the correct out put waveform.
The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as shown. Pick out the correct out put waveform.
Physics-General
Physics-
In the circuit below, A and B represent two inputs and C represents the output.
The circuit represents
In the circuit below, A and B represent two inputs and C represents the output.
The circuit represents
Physics-General
Physics-
If in p-n junction diode, a square input signal of 10 V is applied as shown. Then the output signal across R L will be
If in p-n junction diode, a square input signal of 10 V is applied as shown. Then the output signal across R L will be
Physics-General
Physics-
The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?
The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?
Physics-General
Physics-
If the lattice constant of this semiconductor is decreased, then which of the following is correct?
If the lattice constant of this semiconductor is decreased, then which of the following is correct?
Physics-General
Physics-
Statement-1 : The temperature coefficient of resistance is positive for metals and negative for P-type semiconductor.
Statement-2 : The effective charge carriers in metals are negatively charged whereas in P-type semiconductor they are positively charged.
Statement-1 : The temperature coefficient of resistance is positive for metals and negative for P-type semiconductor.
Statement-2 : The effective charge carriers in metals are negatively charged whereas in P-type semiconductor they are positively charged.
Physics-General
Physics-
The electrical circuits used to get smooth d.c. output from a rectified circuit is called
The electrical circuits used to get smooth d.c. output from a rectified circuit is called
Physics-General
Physics-
The current flowing through the zener diode in fig. is-
The current flowing through the zener diode in fig. is-
Physics-General
