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Max Range = \(\frac{u^2}{\text{g}}\) 36 = \(\frac{u^2}{9.8}\) u\(^2\) = 36 x 9.8 = 352.8 u = \(\sqrt{352.8}\) ≈ 18.78m/s

Note: relative density has no S.I unit ∴ Relative density = weight of substance ÷ weight of equal volume of water RD = w1 ÷ (w1 – w2) (no S. I unit)

f α (MM ÷g2) F(GMM ÷ r2) [G – gravitational constant] GMM = Fr2 G = F02 ÷ MM = m × aπr2 ÷ MM (f = ma) = (m × m5-2 × r2) ÷ MM = (Kg.m52 × m2) ÷ Kg.Kg =1 ÷ kg.m3.52 The dimension mathematically representation have a quantities of M, L AND T M (Mass) = kg, L (Length) = M, T (Time) second G = kg-1 m2.52(Using dimension rule) M-1.L3.T-2 ∴ The universal gravitational constant (G) =\( M­^{–1}L^3 T^{–2} \)

A good electric cell should proses the following 1. A long life of an electric cell, 2. A minimum of polarization effect 3. A cheap and safe electrolytes Except D cost and dangerous of the electric cell

Vr.m.s = V0 ÷ V2, where Vr.m.s rep. to as voltage root –square mean, v = peak voltage Vr.m.s = 200volt, v = ? 200 = V0 ÷ V2 V0 = 200v2 = 200 × 1.414 = 282.8 volts V0 = b &approx.; 283 volts

Convection take place commonly in liquids (water) and slightly in gasses

The regular arrangement of atoms in a crystalline materials is called LATTICES

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

Sclerotic coat (sclera) is the tough outer coat of the eye that coves the eyeball (ii) sclerotic coat is modified in front of the eye to from a transparent and horny window

Temperature gradient(Tg) = DT \div L = T2 – T1 \div L i.e– it is the ratio of an increment in temperature to the length Hence, Temperature gradient (Tg) has defined direction alongside with magnitude And it is a vector quantity Mass, work & Time are scalar quantity

Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%

Volatile liquids (i.e. Ammonia or Freon) are usually have low boiling point

Given: Speed of the man (v) = 6 m/s Distance Calculation: Distance to the Mirror: As the man moves toward the mirror, the distance between him and the mirror decreases by 6 m/s. Distance to the Image: The image moves toward the man at the same speed (6 m/s). Total Change in Distance: The total distance between the man and his image decreases at the rate of: Rate of distance change = v + v = 6 m/s + 6 m/s = 12 m/s Conclusion: The distance between the man and his image increases at a speed of 12 meters per second.

Voltmeter: an instrument for measuring electric potential in volts Galvanometer: it is a device used to indicate direction of a small electric current Potentiometer: is a device for measuring or comparing e.m.fs of cells Meter rule: measuring a distance at different points

In an inelastic collision, linear momentum is conserved and energy is decreased Momentum and kinetic energy are conserved in elastic collision