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Convert into the polar form: (1 + 7i) / (2 – i)².

To convert into polar form,... View Article

(((625)^-½)^-¼)².

Consider the given expression.... View Article

If x² + y² + (1 / x²) + (1 / y²) = 4, then the value of x² + y² is

Consider the given function.... View Article

X and Y invest Rs.21000 and Rs.17500 respectively in a business. At the end of the year, they make a profit of Rs.26400. What is the share of X in the profit?

Ratio of the investment = 21000 : 17500 = 210 : 175 = 42 : 35 = 6: 5 Share of X in the profit = 26400 × (6) / (5 + 6) = 26400... View Article

A shopkeeper sells a table at 8% profit and a chair at a 10% discount, thereby getting Rs 1008. If he had sold the table at 10% profit and the chair at 8% discount, he would have got Rs. 20 more. Find the cost price of the table and the list price of the chair.

Cost price of chair = x Cost price of table = y Case I Selling price of table = y + (8y / 100) = (108 / 100) y Cost price of chair = x - (10 /... View Article

When the price of fans was reduced by 20%, the number of fans sold is increased by 40%. What was the effect on the sales in rupees?

Net effect = - 20 + 40 - [20 × 40] / 100 = 12% The sale increase by 12%.... View Article

If x³ + y³ – 3axy = 0, then prove that d²y / dx² = (2a²xy) / (ax – y²)³.

The given function is... View Article

If 3^x – 3^x-1 = 18, then x^x =

The given expression is... View Article

A bar magnet is released from rest along the axis of a very long, vertical aluminum tube. After sometime the magnet: A. will stop in the tube B. will move with an acceleration ‘g’ C. will move with almost constant speed D. will oscillate

The correct answer is (C) Will move with almost constant speed. Explore more such questions and answers at BYJU’S.... View Article

When An Air Bubble Rises In Water What Happens To Its Potential Energy

When the bubble rises in water, the gravitational potential energy increases as the height increases and there is a net upward force acting on... View Article

In a large room, a person receives direct sound waves from a source 120 m away from him. He also receives waves from the 25 m high ceiling at a point half way between them. The two waves interfere constructively for wavelengths of (A) 10 m, 20 m, 30 m, etc. (B) 20 m, 20/3 m, 20/3 m.(C) 15 m, 25 m, 35 m, etc.(D) 10 cm, 5 m, 10/3 m, etc.

The correct answer is (D) 10 cm, 5 m, 10/3 m, etc. Path difference is Phase change Constructive interference for Where n =... View Article

Why Is Improper Disposal Of Waste A Curse To Environment

Improper disposal of waste is a curse to the environment because it pollutes the environment and causes harmful effects on living organisms. For... View Article

The Perimeter Of A Triangle Abc Is 6 Times The Arithmetic Mean Of The Sines Of Its Angles. If The Side A Is 1, Then The Angle A Is_____.

We have a + b + c = Where K = 2 Since sin A + sin B + sin C Therefore, the Angle A is Explore more such questions and... View Article

Find The Least Number Of Square Tiles Required To Pave The Ceiling Of A Room 15m , 17cm Long and 9m , 2cm Broad.

Given: Length 15m 17cm = 1517 cm Width = 9m 2cm = 902cm Area of ceiling =(1517 * 902) = 1,368,334 cm2 The dimension of square tile required... View Article

The Shape Of Scl2 Molecule Is

Sulfur dichloride (SCl2) has a bent molecular geometry with approximate bond angles of 103° and a bond length of 201 pm. Explore more such... View Article

The Female External Genitalia Include (A) Clitoris (B) Mons Pubis (C) Labia Majora (D) All Of These

The correct answer is (D) All Of These. Explore more such questions and answers at BYJU’S.... View Article

What Is Lymph How Is Composition Of Lymph Different From Blood Plasma

Lymph is defined as a clear to pale-white or colourless fluid, which comprises lymph plasma, lymph corpuscles and lymphoid organs. Differences... View Article

Find The Degree Measures Corresponding To The Following Radian Measures

Given: Sol: Radian Measure = * Degree measures = Degree measures Degree measures = Degree measures = = = = = = = = = =... View Article

Invisible Export means export of __________. (A) Services. (B) Prohibited goods. (C) Unrecorded goods. (D) Perishable goods.

The correct answer is (A) Services. Explore more such questions and answers at BYJU’S.... View Article

The Work Done In Blowing A Soap Bubble Of Radius 02 M Given That The

The correct answer is (A) w = w = = Explore more such questions and answers at BYJU’S.... View Article

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