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A composite resistance of 50 ohm which can carry a current of 4A is to be made from resistances each of resistance 100ohm which can carry a current of 1A. the minimum number of resistances to be used is: a) 4 b) 8 c) 12 d) 16.

Given that, Composite resistance = 50 ohm Current = 4 A Each resistance = 100 ohm Each resistance carry a current = 1 A Suppose, In one pair, two... View Article

When scattering of light takes place in a colloidal solution the particles in it scatters light but did light passes through the particle which scatters it and moves to next particle or does the particle of colloid absorbs light?

The Tyndall effect is light scattering by particles in a colloid or in a very fine suspension. When light is passed through a true solution, the... View Article

A and B are partners sharing profit and losses in the ratio 3:2. They decided to admit C as a partner for 1/4th share. New ratio and sacrificing ratio will be There is a option for above mentioned question (a) 9:7:6 , 3:2 (b) 3:2:1, 3:2 (c) 10:5:5 , 3:5

Old ratio (A and B) = 3 : 2 C is admitted for 1/4 share Let the combined share of A, B and C = 1 Combined share of A and B after C's admission =... View Article

Explain what happens to the molecular motion and energy of 1kg of water at 273K when it changes to the ice at the same temperature. How it is the latent heat of fusion related to the energy exchange that takes place during this change of state?

When water is converted to the ice at the same temperature, there are changes involved in internal potential energy. The molecular motion... View Article

A restaurant hall is 20 metres long, 15 metres wide and 10 metres high. The interior of the hall except the ceiling and the base has to be covered with a bright wall paper. What will be the total expenditure if the wall paper costs Rs.60 per square metre?

Length = 20 m Breadth = 15 m Height = 10 m To find: Total costing to cover the walls 1) Only the walls of the rectangular hall are included when... View Article

The teacher instructed three students ‘A’, ‘B’ and ‘C’ respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). ‘A’ dissolved 50g of NaOH in 100 mL of water, ‘B’ dissolved 50g of NaOH in 100g of water while ‘C’ dissolved 50g of NaOH in water to make mL of solution. Which one of them has made the desired solution?

Answer: C has made the desired solution Student A and B prepare 150 ml solution, so student C make desire solution because he adds water to make... View Article

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Archives

A composite resistance of 50 ohm which can carry a current of 4A is to be made from resistances each of resistance 100ohm which can carry a current of 1A. the minimum number of resistances to be used is: a) 4 b) 8 c) 12 d) 16.

When scattering of light takes place in a colloidal solution the particles in it scatters light but did light passes through the particle which scatters it and moves to next particle or does the particle of colloid absorbs light?

A and B are partners sharing profit and losses in the ratio 3:2. They decided to admit C as a partner for 1/4th share. New ratio and sacrificing ratio will be There is a option for above mentioned question (a) 9:7:6 , 3:2 (b) 3:2:1, 3:2 (c) 10:5:5 , 3:5

Explain what happens to the molecular motion and energy of 1kg of water at 273K when it changes to the ice at the same temperature. How it is the latent heat of fusion related to the energy exchange that takes place during this change of state?

A restaurant hall is 20 metres long, 15 metres wide and 10 metres high. The interior of the hall except the ceiling and the base has to be covered with a bright wall paper. What will be the total expenditure if the wall paper costs Rs.60 per square metre?

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