Question
Two sound waves have frequencies 256 Hz and 260 Hz. The
beat frequency is:Solution
Beat frequency = difference = ∣260−256∣ = 4 Hz.
A negative test charge is released in a non-uniform electric field. It moves towards a region of:
Which of the following statement is correct?
I. Value of ‘g’ is higher at poles than equator
II. Weight of an object at moon is 1...
What is the work done when a force of 10 N moves an object by 5 m in the direction of the force? Â
Which of the following is not an insulator?
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by –
What is the phenomenon of bending of light around corners called? Â
Which of the following is not a vector quantity?
In a charged conductor, where do the electrical charges tend to reside?
In an ideal gas, the relationship between pressure P, volume V, and temperature T is given by:?   Â
The reason for a swimming pool to appear less deep than the actual depth is –