Maths-
General
Easy
Question
Simplify 
The correct answer is:
Related Questions to study
Maths-
If 
If
Maths-General
Maths-
The distance of the line 3x – y = 0 from the point (4, 1) measured along a line making an angle of 135º with the x – axis is
The distance of the line 3x – y = 0 from the point (4, 1) measured along a line making an angle of 135º with the x – axis is
Maths-General
Physics-
A stationary sound source 's' of frequency 334 Hz and a stationary observer ' O ' are placed near a reflecting surface moving away from the source with velocity 2 m/sec as shown in the figure. If the velocity of the sound waves is air is V=330 m/sec, the apparent frequency of the echo is
A stationary sound source 's' of frequency 334 Hz and a stationary observer ' O ' are placed near a reflecting surface moving away from the source with velocity 2 m/sec as shown in the figure. If the velocity of the sound waves is air is V=330 m/sec, the apparent frequency of the echo is
Physics-General
Physics-
The speed of sound in a gas, in which two waves of wavelength 1.0 m and 1.02 m produce 6 beats per second, is approximately:
The speed of sound in a gas, in which two waves of wavelength 1.0 m and 1.02 m produce 6 beats per second, is approximately:
Physics-General
Physics-
A wire of length 40 cm which has a mass of 4gms oscillates in its second harmonic and sets the air column in the tube to vibrations in its fundamental mode as shown in figure. Assuming speed of sound in air as 340 m/s, find the tension in the wire.
A wire of length 40 cm which has a mass of 4gms oscillates in its second harmonic and sets the air column in the tube to vibrations in its fundamental mode as shown in figure. Assuming speed of sound in air as 340 m/s, find the tension in the wire.
Physics-General
Physics-
Two sounding bodies are producing progressive waves given by 
and 
, where 
is in second which superpose near the ears of a person. The person will heard.
Two sounding bodies are producing progressive waves given by and , where is in second which superpose near the ears of a person. The person will heard.
Physics-General
Physics-
A pulse shown here is reflected from the rigid wall A and then from free end B. The shape of the string after these 2 reflection will be
A pulse shown here is reflected from the rigid wall A and then from free end B. The shape of the string after these 2 reflection will be
Physics-General
Physics-
A mixture of two diatomic gases exists in a closed cylinder. The volumes and velocity of sound in the two gases are 
and 
respectively. Determine the velocity of sound in the gaseous mixture. (Pressure of gas remains constant)
A mixture of two diatomic gases exists in a closed cylinder. The volumes and velocity of sound in the two gases are and respectively. Determine the velocity of sound in the gaseous mixture. (Pressure of gas remains constant)
Physics-General
Physics-
A long rope is design as shown in the figure such away that v independent of z is distance from point of suspension. For such a rope 
cannot be constant. Where is linear density of rope. what is the general equation for 
[use 
as mass per unit length of the rope at point z=0 ]
A long rope is design as shown in the figure such away that v independent of z is distance from point of suspension. For such a rope cannot be constant. Where is linear density of rope. what is the general equation for [use as mass per unit length of the rope at point z=0 ]
Physics-General
Physics-
Figure shows the shape of part of a long string in which transverse waves are produced by attaching one end of the string to tuning fork of frequency 250 Hz. What is the velocity of the waves?
Figure shows the shape of part of a long string in which transverse waves are produced by attaching one end of the string to tuning fork of frequency 250 Hz. What is the velocity of the waves?
Physics-General
Physics-
The equation of a wave travelling along the positive x-axis, as shown in figure at t=0 is given by
The equation of a wave travelling along the positive x-axis, as shown in figure at t=0 is given by
Physics-General
Physics-
A car travelling at a speed of 54 km/hr towards a large wall horns a sound of frequency 400 Hz. A person standing between the car and the wall recieves sounds one directly from the car and the other reflected from the wall. The number of beats heard by him per second are
A car travelling at a speed of 54 km/hr towards a large wall horns a sound of frequency 400 Hz. A person standing between the car and the wall recieves sounds one directly from the car and the other reflected from the wall. The number of beats heard by him per second are
Physics-General
Maths-
The normal form of the line x
+ y + 4 = 0
The normal form of the line x + y + 4 = 0
Maths-General
Physics-
A person is listening to two trains one approaching him while the other moving away from him. The speed of both the trains is 5 m/s. If both trains give off whistle of their natural frequency of 280 Hz then the observer will hear
A person is listening to two trains one approaching him while the other moving away from him. The speed of both the trains is 5 m/s. If both trains give off whistle of their natural frequency of 280 Hz then the observer will hear
Physics-General
Physics-
A tuning fork of frequency 250 Hz produces 4 beats per second with a wire of length 25 cm vibrating in its fundamental mode. The beat frequency decreases when the length is slightly shortened. What could be the minimum length by which the wire be shortened so that it produces no beats with the tuning fork?
A tuning fork of frequency 250 Hz produces 4 beats per second with a wire of length 25 cm vibrating in its fundamental mode. The beat frequency decreases when the length is slightly shortened. What could be the minimum length by which the wire be shortened so that it produces no beats with the tuning fork?
Physics-General
