1. M live on 6th floor. 2. A lives immediately below M. 
3. Only two persons live between M and B. 4. E live above B but not at the topmost floor. 
Note: E live on 7th floor not on 4th floor because no two persons according to alphabetical order live adjacent to each other. 5. Only one person sit between Z and B. 6. N live either 2nd or 7th floor. 
F cannot sit on topmost floor because no two persons according to alphabetical order live adjacent to each other 
Which of the following materials is used for the generation of ultrasonic waves by using magnetostriction effect?
What is the focal length of a double convex lens for which the radius of curvature of each surface is 30 cm and the refractive index of glass is 2.50 ?
In which type of motion does the velocity of a body vary with time?
The point where the total mass of a body is considered to be concentrated is known as what?
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What is the process of melting also called?
The sharpness of a television image is termed as its –
What is the value of acceleration due to gravity at the center of the earth?
A charged particle oscillates about its mean equilibrium position with a frequency of 105 Hz. What is the frequency of the electromagnetic wa...
As we go from Equator to North pole the value of ‘S; the acceleration due to gravity
