Question
Two circles of radii 15 cm and 10 cm touch each other
externally at a point A. PQ is the direct common tangent of those two circles of centers O ₁ and O ₂ respectively. The length of PQ is equal toSolution
In which form is the supplied heat energy stored during change in temperature of substance?
Why is red colour preferred for danger signal lights?
Which one of the following is used to remove Astigmatism for a human eye?
Which of the following types of waves has the smallest wavelength?
Electrical fuse is used to interrupt excess of _________.
The energy of wind is-
According to Maxwell’s right-hand thumb rule, the direction of magnetic field lines around a current-carrying wire is indicated by the:
A girl is standing 5 metres away from a plane mirror. How much distance should she move towards the mirror so that she will be 2 metres farther from her...
During __________ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
Which medium cannot propagate sound waves?
