Question 4671:

Two forces whose resultant is \(100 \mathrm{~N}\), are at right angles to each other. If one of them makes an angle of \(30^{\circ}\) with the resultant, determine its magnitude.

A. \(8.66 \mathrm{~N}\)
B. \(50.0 \mathrm{~N}\)
C. \(57.7 \mathrm{~N}\)
D. \(86.6 \mathrm{~N}\)

Question 4672:

A conductor of length \(2 \mathrm{~m}\) carries a current of \(0.8\) A while kept in magnetic field of magnetic flux density \(0.5 \mathrm{~T}\). The maximum force acting on it is ____________

A. \(8.0 \mathrm{~N}\)
B. \(3.2 \mathrm{~N}\)
C. \(0.8 \mathrm{~N}\)
D. \(0.2 \mathrm{~N}\)

Question 4673:

A heavy object is suspended from a string and lowered into water so that is completely submerged. The object appears lighter because ____________

A. The density of water is less than that of the object
B. The pressure is low just below the water surface
C. If experiences an up thrust
D. The tension in the string neutralizes part of the weight

Question 4674:

If a man is standing between two parallel plane mirrors with their reflecting surfaces facing each other, how many images of the man will be formed?

A. 8
B. 2
C. 4
D. Infinite

Question 4675:

In the Hare's apparatus, water rises to a height of \(26.5 \mathrm{~cm}\) in one limb. If a liquid rises to a height of \(20.4 \mathrm{~cm}\) in the other limb, what is relative density of the liquid?

A. 0.8
B. 1.1
C. 1.2
D. 1.3