Question
To look at the inside of a developing egg by shining a
bright light through it, is calledSolution
The visual examination of egg by holding it in between the eye and source of light to test internal quality and freshness of egg is called candling. The appliance used for candling is known as candler. This is a small box fitted with little bulb illuminating rays of light through a focal point.
The moment of inertia of a thin rod of length L and mass M about an axis perpendicular to the rod and passing through a point at a distance L/4 from one...
The Lyman series in hydrogen atom spectrum lies in:
What is the speed of sound in air at room temperature (approx)? Â
A metallic conductor of circular cross-section has radius R. If current density varies as J = Jₒ(1−r/R), the total current through the conductor is:...
The half-life of a radioactive substance is 5 hours. How much of the substance remains after 15 hours?   Â
A coil with N turns and area A is placed in a magnetic field varying as B = B₀·e–αt. What is the induced EMF at time t = 0?
The law of reflection states that the angle of incidence is equal to the angle of reflection. What is the angle of incidence when the angle of reflectio...
Which of the following pair regarding sound is correct?
I. Loudness – depends on amplitude
II. Shrillness – depends on frequency
The absolute temperature of a body A is five times that of another body B. For two bodies, the difference in wave lengths at which energy radiated is ma...
What is the SI unit of magnetic flux?
