Two persons `P` and `Q` of same height are carrying a uniform beam of length `3m`. If `Q` is at end, the distane of `P` from the other end so that `P,Q` receive loads in the ratio `5:3` is

Two wires P and Q are of the same diameter and having their lengths in the ratio 5:3 , when the wires are subjected to the some load, the corresponding extensions are in the ratio 4:3 . Compare Young's Modulus of the materials P and Q.

A 2m long metallic wire is broken into two unequal points P and Q. P part of the wire is uniformly extended into another wire R. Length of R is twice the length of P and resistance of R is equal to that of Q. Find the ratio of resistances of P and R and also the ratio of lengths of P and Q.

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

There is a concave mirror of focal length 7.5 cm. Two objects P and Q are placed in front of this concave mirror one by one. Heights of the images of P and Q are found to be same. Height of P is double to that of height of Q and is placed at a distance 15 cm from the mirror. At what distance object Q was placed?

A rod of length 13 metres has one end P on the X-axis and the other end Q on the y-axis. If P moves on the X-axis with a speed of 12 m/sec, then the speed of the other end Q when it is 12 m from the origin is

A rod of length 13 metres. has its end P on the x-axis and the other end Q on the y-axis. If P moves along the x -axis with a speed of 12 m/sec, then the speed of the other end Q when it is 12 metres from the origin is

Two metalic spheres p and Q are made of same material have same smoothness but the weight of p is 8 times that of Q if the two are heated to same temperature and left to cool then the ratio of rate of cooling of Q to that of p is