1. If two charge of 1 coulomb is placed 1 km 1 \mathrm{~km} 1 km apart from each other in polythene then force acting between them is (Dielectric constant of polythene is =2.3 =2.3 =2.3 )
3.91×103 N 3.91 \times 10^{3} \mathrm{~N} 3.91×103 N
4×105 N 4 \times 10^{5} \mathrm{~N} 4×105 N
2×10−6 N 2 \times 10^{-6} \mathrm{~N} 2×10−6 N
3.91×10−8 3.91 \times 10^{-8} 3.91×10−8
2. Genus of our national fruit -
Anacardiaceae
Moraceae
Meliaceae
Solaneceas
3. Young's modulus for Aluminum is -
7.0×1010Nm2 7.0 \times 10^{10} \mathrm{Nm}^{2} 7.0×1010Nm2
7.0×1012Nm2 7.0 \times 10^{12} \mathrm{Nm}^{2} 7.0×1012Nm2
20×1010Nm2 20 \times 10^{10} \mathrm{Nm}^{2} 20×1010Nm2
7.0
4. Three forces 5 N,7 N 5 \mathrm{~N}, 7 \mathrm{~N} 5 N,7 N and 8 N 8 \mathrm{~N} 8 N acts at a point to create equilibrium. Angle between 8 N 8 \mathrm{~N} 8 N and 5 N 5 \mathrm{~N} 5 N force is.
30∘ 30^{\circ} 30∘
60∘ 60^{\circ} 60∘
90∘ 90^{\circ} 90∘
120∘ 120^{\circ} 120∘
5. Start codon-
UAA
UAG
AUG
UGA