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An observer 1.5 metres tall is 20.5 metres away from a tower 22 metres high. Determine the angle of elevation of the top of the tower from the eye of the observer.

As per the given condition and figure drawn, tan A = OB/BC [Tan A = Opposite side to angle A/Adjacent side] OB = 22 -... View Article

What is presbyopia? State its causes and how is its corrected?

Presbyopia is a state of defect of vision when an individual is not able to see clearly nearby and far off objects. Presbyopia is caused as part... View Article

The unit vector along i + j is: (A) k (B) i + j (C) (i + j)/√2 (D) (i + j)/2

Answer: (C) (i + j)/√2 Given, vector = i + j Magnitude of vector = |i + j| Unit vector along(i+j) = (i+j)/|i+j| Since i and j are... View Article

How does pruning help in making the hedge dense? A.It induces the differentiation of new shoots from the rootstock. B.It frees axillary buds from apical dominance. C. The apical shoot grows faster after purning. D.It releases wound hormones

Answer: B.It frees axillary buds from apical dominance.... View Article

Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matte obtained from the blast furnace is charged into a silica-lined converter. Some silica is also added, and a hot air blast is blown into the mixture to obtain blister copper, which is purified by electrorefining. The chemical composition of the slag formed during smelting is: (i)CuSiO3 (ii) CaSiO3 (iii) FeSiO3 (iv) None of these

Answer: (iii) FeSiO3 Extraction of copper is done using copper pyrites. After roasting, the ore is mixed with silica and coke and then... View Article

Which of the following is not defined? (A) Sin 90° (B) Cos 90° (C) Tan 90° (D) Sin 0°

Answer: (C) Tan 90° Tan 90° = Sin 90°/Cos 90° = 1/0 = Undefined... View Article

Jallianwala bagh incident took place on:

Jallianwala bagh incident took place on April 13, 1919.... View Article

In an oscillating LC circuit, the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored equally between the electric and magnetic field is:

When the capacitor is completely charged, the total energy in the L.C circuit = 1/2 Q2/C Since, electrostatic energy is equal to magnetic... View Article

The latent heat of vaporisation of a substance is always: (A) greater than its latents heat of fusions (B) greater than its latent heat of sublimation (C) equal to its latent heat of sublimation (D) less than its latent heat of fusion

(A) greater than its latents heat of fusions The latent heat of vaporisation of a substance is always greater than its latents heat of fusions.... View Article

The electrostatic force on a small sphere of charge 0.4 mu c due to the distance bwtwen the two spheres (b) what is the force on the second spere due to the first.

Electrostatic force on the first sphere, F=0.2N Charge on this sphere, q1=0.4μC=0.4×10−6C Charge on the second sphere, q2=−0.8μC=−0.8×10−6C... View Article

2142 g of sugar syrup contains 342 g of sugar. Calculate (i)molarity of the solution (ii)mole fraction of sugar in the syrup.

(i) Given, Mass of sugar=34.2 gram. Number of moles of sugar = 34.2/(mol.mass) = 34.2/342 = 0.1 Mass of water = (214.2-34.2)=180g or 180/1000... View Article

Abstract noun of free.

Abstract noun of free is 'Freedom'.... View Article

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Archives

An observer 1.5 metres tall is 20.5 metres away from a tower 22 metres high. Determine the angle of elevation of the top of the tower from the eye of the observer.

What is presbyopia? State its causes and how is its corrected?

The unit vector along i + j is: (A) k (B) i + j (C) (i + j)/√2 (D) (i + j)/2

How does pruning help in making the hedge dense? A.It induces the differentiation of new shoots from the rootstock. B.It frees axillary buds from apical dominance. C. The apical shoot grows faster after purning. D.It releases wound hormones

Which of the following is not defined? (A) Sin 90° (B) Cos 90° (C) Tan 90° (D) Sin 0°

Jallianwala bagh incident took place on:

In an oscillating LC circuit, the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored equally between the electric and magnetic field is:

The latent heat of vaporisation of a substance is always: (A) greater than its latents heat of fusions (B) greater than its latent heat of sublimation (C) equal to its latent heat of sublimation (D) less than its latent heat of fusion

The electrostatic force on a small sphere of charge 0.4 mu c due to the distance bwtwen the two spheres (b) what is the force on the second spere due to the first.

By what number should -44/9 be divided to get -11/3

Solve: 15-8+(-9)

Square root of 2401 with prime factorisation.

Identify the feminine form of the noun prince (A) Princess (B) Princy (C) Princa (D) Princine

A well defined nucleus is absent in: (A) blue-green algae (B) diatoms (C) algae (D) Yeast

Full form of B.C.R in computer

Draw electronic dot structure of propene

False feet in amoeba are called? (A)Pseudopodia (B) Food Vacuole (C) Water Vacuole (D) None of these

2142 g of sugar syrup contains 342 g of sugar. Calculate (i)molarity of the solution (ii)mole fraction of sugar in the syrup.

Abstract noun of free.

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