Selina Concise Physics Class 6 Inside Based Question Paper with All Answer. Now of days for ICSE Class 6 Students, it is not enough to Learn only Exercise Questions Answers. As because most of the time Examiners will give Inside Question Answer from that respective Chapter. So Here in this page Our Experts provided All Selina Concise Class 6 Physics Inside Questions & Answers – Physical Quantities And Measurement.
Physical Quantities And Measurement : Selina Concise Class 6 Physics Inside Question Answer
(1) How many system of units are used to measure lengths, mass and time?
Ans. There were the following three system of units used –
(i) Centimeter gram second, system (C.G.S)
(ii) Foot Poured Second System (F.P.S)
(iii) Metre Kilogram Secind (M.K.S Sestem) or metric system.
(2) What is the unit and symbol of length in C.G.S system?
Ans. The unit of length in C.G.S is Centimeter (CM) and symbol is Cm.
(3) What is physical quantity ? How many physical quantity in our daily life?
Ans. A quantity that can be measured is called a physical quantity.
In our daily ;ife there are four basic physical quantities-
(i) Length (ii) Mass (iii) Time (iv) Temperature
(4) Define a Metre?
ans. A metre was initially defined as the distance between two points on a rod of platinum alloy kept at ioc in the international bureau of weights and measures.
(5) What is the unit of length in FPS System?
Ans. Foot (ft).
(6) What is the relation between ft and inch?
Ans. 1 inch = 2.54 cm
1 ft = 30.48 cm.
(7) What is the SI unit of mass?
Ans. Kilogram written as Kg.
(8) What is the relation between gram, kilogram and pound?
Ans. We know, 1 gm = 1/1000 kg
10-3 kg
and 1 lb = 453.59 g.
(9) How many parts has an electronic balance? and Write the parts.
Ans. An electronic balance has the following three parts –
(i) The structure
(ii) The load cell
(iii) The signal conditioner.
(10) Which device uses for measuring time?
Ans. The device uses are –
(i) Pendulum clock
(ii) A watch for measuring time.
(11) Which device uses for measuring a short time internal?
Ans. Stop watch.
(12) What is temperature? What is the SI unit of temperature?
Ans. Temperature is the measure of degree of hotness and coldness of an object. Heat always flows from the high temperature to the low temperature.
The SI unit of temperature is Kelvin (K).
(13) What is the temperature of an Ice point in Kelvin Scale?
Ans. The temperature is 273 K.
(14) Which device used to measure the temperature?
Ans. Temperature is measured with a thermometer.
(15) What is the normal temperature of human body?
Ans. Normal temperature of human body is 37 degree celsius or 98.6 degree ferenheit.
(16) What is the formula of area of (i) triangle of length of base l and height h (ii) Area of a circular lamina of radius r.
Ans. (i) ½ x length of base x height
= ½ x l x h
(ii) Area of a Circular lamina of radius r = π x (radius)2
= πr2
(17) Define One square meter.
Ans. One square meter is the area of square of each side one meter.