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The current passing through a galvanometer is 30 mA, resistance of the galvanometer is 50 Ω and a shunt is 1 Ω is connected to the galvanometer. What is the maximum current that can be measured by this ammeter?
A galvanometer coil has a resistance of 50 Ω and the meter shows full scale deflection for a current of 5 mA. This galvanometer is converted into voltmeter of range 0 – 20 V by connecting
A rectangular swimming pool is 15 meter long and 30 meter wide. A deck, with uniform width, surrounds the pool. If the total area of the pool and deck is 1050 square meter what is the width of the deck in meter?
Select the option that is true regarding the following two statements labeled Assertion (A) and Reason (R). Assertion (A): Whenever we measure an electrical signal, there are chances of over current which leads to overheating of the meter. In such cases, the meter can be protected by using a semiconductor diode of suitable rating. Reason (R): As soon as the diode is short-circuited, the meter current is diverted through the diode. As a result, the meter is being protected from excess heating.
How many floor tiles of measurement  5 meter × 1 meter will be required for lying tiles in 30 meter long and 25 meter wide rectangular field?
In a playground P, Q, R, S, and T are standing, facing the north as described below: - I. Q is 50 meter to the right of S. II. P is 60 meter to the south of Q. III. R is 40 meter to the west of S. IV. T is 80 meter to the north of P. If a person from R walks straight, meets S followed by Q, P and then T. Then how much distance did he cover?
Price of LED strip is constant at Rs. 150 up to the length of x meter and beyond that it is charged Rs. 22 per meter. If a person buys 17 meter LED strip, he has to pay total amount of Rs. 392. What will be the price of 23 meter LED strip?
A middle school mathematics teacher distributes a piece of rope, 1 meter long, to her students. She asks them to make a list of things in their surroundings that are 1 meter long, slightly less or more than 1 meter, double or half of one meter. Which of the following statement(s) is/are true for the given situation? (a) It can be used as an activity to introduce standard unit of length measurement in a class. (b) It can be used to encourage children to estimate length of objects in daily life, (c) It is a good activity to establish the formula for conversion of metre to centimetre or vice-versa. (d) This type of activity should be given only as home task so that class time is utilised for solving the questions. Choose the correct option.
The accompanying image shows a large cube made of dark and white small sugar cubes. Small cubes of the diagonally arranged row of the bottom surface of the large cube, small cubes of the row with one face on the right-hand surface of the large cube, small cubes of the row with one face on the front surface of the large cube, and small cubes of the column with one face on the top of large cube surface are all dark. Select the number of small white cubes of the large cube.
Some small cubes of same height 7 cm but variable length and width are put inside a large cuboid of height 21 cm. Length and width of cuboid is 32 cm and 24 cm, respectively. Small cubes are put such that cubes at the bottom most layer is of similar base area; second layer contains all the cubes of similar base area and third layer have all the cubes of similar base area. Which of the following statement(s) given below is / are TRUE? A: If side of each small cubes at bottom most layer is 8 cm, then maximum number of small cubes that can be put at bottom most layer is 12. B: If maximum of 48 cubes can be put at second layer, then side of each cube at second layer is 6 cm. C: If side of each small cubes at third layer is 1.6 cm, then maximum number of small cubes that can be put at third layer is 300.