In a circle of radius 5 cm, AB and AC are two equal chords such that AB = AC = 6 cm. Find the length of the chord BC.
A cylindrical tub of radius 16 cm contains water to a depth of 30 cm. A spherical iron ball is dropped into the tub and thus level of water is raised by 9 cm. What is the radius of the ball?
When we rub glass rod with fur, the glass rod will acquire
A Positive charge
B Negative charge
C Either positive or negative charge
D Neither positive nor negative charge
what can be the answer?
Two electroscope one positively charged (X) and the other negatively charged (Y) are connected with a copper wire as shown in figure. Which of the following will happen?
A Electrons will move from X to Y.
B Protons will move from X to Y.
C Electrons will move from Y to X.
D Protons will move from Y to X.
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The given figure shows a V shaped wire lying in x - y plane. A current of I ampere flows in the wire. The direction of the magnetic field at point P which lies in the same plane is along
Tanmay heated a bimetallic strip made up of metal X and metal Y. After a few minutes, he observed that it curled as shown.
What can be concluded from this experiment?
A Metal X expands more than metal Y.
B Metal Y expands more than metal X.
C Metal X expands and metal Y contracts.
D Metal Y expands and metal X contracts.
The diagram shows a beaker containing a solution of zinc sulphate and two carbon electrodes. A battery is placed next to it. In order that the electrode P be plated with zinc,
A P must be connected to S and Q to R
B P must be connected to Q and S to R
C P must be connected to R and Q to S
D P and Q must be connected to R.
The answer would be a as znso4 wold breakdown into zn 2and so42-ions .the zn 2 would be attracted towards cathode(negative terminal) so p would be attached to negative terminal and therefore the answer is a.