Question
The mean deviation and coefficient of mean deviation of
5 observation are 1.2 and 0.4. If the sum of the first four terms is 10, then the fifth term is equal to:Solution
The correct answer is B
A spherical black body with a radius of 8 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated...
In which type of wave do the particles of the medium vibrate perpendicular to the direction of wave propagation? Â
Gamma rays have greatest similarity with –
In which medium can sound not travel?
The mass of a star is two times the mass of the Sun. How it will come to an end?
A constant retarding force of 60 N is applied to a body of mass 25 kg moving initially with a speed of 12 m s–1. How long does the body...
The polarization of electromagnetic waves demonstrates that they are:
A particle starts from rest and accelerates uniformly at 2 m/s² for 5 seconds, then moves with constant speed for 5 seconds and finally decelerates uni...
An object is placed 10 cm from a convex mirror of focal length 15 cm. Find the position of the image.
Which of the following phenomena cannot be explained by the wave theory of light?
