Question
Which current produces a varying magnetic field when it flows through a conductor
(a) Which of the two, alternating current or direct current, produces a varying magnetic field when it flows through a conductor? (b)…
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According to the NEW colour convention which colour of wire is connected to
According to the NEW colour convention which colour of wire is connected to: (a) the metal body of the appliance (b) the…
Question
A ray of light enters a rectangular glass slab submerged in water
A ray of light enters a rectangular glass slab submerged in water at an angle of incidence 55°. Does this ray undergo…
Question
The displacement–time graph of a sound wave produced by a vibrating wire
The displacement–time graph of a sound wave produced by a vibrating wire is shown below. (a) How will you adjust the tension…
Question
A non-uniform kite is hanging freely from the branch of a tree
A non-uniform kite is hanging freely from the branch of a tree as shown. Study the figure and answer the following: (a)…
Question
Complete the following by choosing the correct answers from the bracket
Complete the following by choosing the correct answers from the bracket: (a) In uniform circular motion the centrifugal force acts …………… [towards…
Question
The following figure shows a small bar magnet falling freely through a copper ring
The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of…
Question
Each of the substances given below is supplied with same amount of heat
Each of the substances given below is supplied with same amount of heat. Which one will attain the highest temperature? Substance Specific…
Question
A radioactive element P emits one α-particle and transforms to a new element Q
A radioactive element P emits one α-particle and transforms to a new element Q. What will be the position of the element…
Question
In the given circuits Y and Z, the resistors, R₁ and R₂, are connected in
In the given circuits Y and Z, the resistors, R₁ and R₂, are connected in : (a) series in both the circuits…