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Start learning 50% faster. Sign in nowMicrophone: Converts a sound wave into an electrical signal. Loudspeaker: Converts an electrical signal into sound waves. Headphone: Converts electrical energy into mechanical energy to produce sound. Amplifier: • It is used to change the amplitude of a signal. • The purpose of an amplifier is to produce an output signal larger than that of the input signal. • It is used to convert Direct current into Alternate Current.
A frustum of a cone has a lower base radius of 5 cm, an upper base radius of 3 cm, and a height of 4 cm. What is the volume of the frustum?
A and B partnered to start a business with initial investments of Rs. 1,200 and Rs. 1,500, respectively. After one year, they both reinvested additional...
A pipe can fill a tank in 10 hours, while another pipe can empty it in 15 hours. If both pipes are opened simultaneously, in how many hours will the tan...
What will come in place of '?' in the given expression?
{(14.25 + 124 ÷ 16 + 23) ÷ 243 (1/5) + √169} ÷ √0.16 = ?
...Aman bought 21 notebooks for Rs.1250 from shop A and 12 notebooks for Rs.895 from shop B. What is the average price he paid per book?
A cube of volume 768 cm³ is molded into a cuboid whose length, width, and height are in the ratio 2: 2: 3. Find the length of the cuboid.
The ratio of ages of A and B is 4:3. If A is 5 years older than B, find the age of B.
'P' increases the price of a shirt by 20%. If he reduces the discount percentage from 15% to 10%, his profit rises by Rs. 2400. Determine the profit or ...
(28 × 5 ÷ 7) × 6 = ?
