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No expanded working has been attached for this question yet. The verified answer is Option B.

Capacitors pass AC but block DC signals (when charged up to the applied DC voltage), they are often used to separate the AC and DC components of a signal. Capacitors are also primarily used to store energy.

Ammeters are connected in series so, A3= A2 + A1 A1 = A3 - A1 = 5A - 2A = 3A

Two magnetic lines of force can not intersect each other.

No expanded working has been attached for this question yet. The verified answer is Option D.

The impedance for a RLC circuit is \(Z = \sqrt{R^{2} + (X_{L} - X_{C})^{2}}\) = \(\sqrt{10^{2} + (9 - 4)^{2}}\) = \(\sqrt{125}\) = 11.18\(\Omega\) \(\approxeq\) 11.2\(\Omega\)

By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Also, they form closed lines.

In the course of natural radioactivity, alpha, beta and gamma rays are emitted.

No expanded working has been attached for this question yet. The verified answer is Option A.

Radio wave has the longest wavelength and shortest frequency.

No expanded working has been attached for this question yet. The verified answer is Option D.

The element B has a mass number of 70 with atomic number 32. Hence, B has 32 protons and (70-32) = 38 neutrons. The neutron- proton ratio is 38:32 = \(\frac{38}{32} = 1.1875\) \(\approxeq 1.2\)

Materials for making optical fibre are Glass, Polycarbonate, Teflon sheath, Silica, quartz, Silicon, Sapphire. Feromagnetic

Three classes of magnetic materials are (i) Diamagnetic (ii) Paramagnetic (iii) Feromagnetic

(a) An intrinsic semiconductor contains equal number of free electrons and holes. (b) p— TYPE n - TYPE i The majority carrier of electricity is holes. The majority carrier of electricity is electron. ii Carries a net positive charge Carries a net negative charge iii The impurity is trivalent The impurity is pentavalent.