Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.	Propagation of sound can be visualized as propagation of ______ in the medium.
Answer» SOLUTION :Propagation of sound can be visualized as propagation of PRESSURE VARIATIONS in the medium.

2.	In an electromagnet, the core is made up of copper.
Answer» ANSWER :FALSE

3.	Different units of density arekg m^(-3), " g " cm^(-3), " kg " cm^(-3) and " g " m^(-3).Arrange the following steps in a sequential order to write the ascending order of these units.
Answer» (a) a d c b (b) c b d a (c ) a b d c (d) a d b c Solution : Different units of DENSITY are given as kg `m^(-3)`, " g " `CM^(-3)`, " kg " `cm^(-3)` and " g " `m^(-3)`. First convert all the remaining units into any one of the systems, (a,d, b) and then COMPARE the numerical values after the conversionand arrange them in the ASCENDING ORDER (c ).

4.	If Q cal of heat energyis supplied to 'm' kg of substacne its temeprature changes from t_(1)C ot t_(2)CArrange the following steps in a sequential order to calculate speciific heat capacity of the substacne in SI system (a) Note down the mass of the substance as 'm' kg heatenergy as Q cal and the temperrures as t_(1)C and t_(2)C (b) Write the formula for the amount of heat energy lost or gained by a body as Q=mstriangelt (c ) Convert the heat energy and temperature into si system (d) substitute the values in the formula and calculate the specific heat capacity of the substacne (e ) Find the change in temperature of the substacne
Answer» acedb cdaeb acebd ceabd Solution :Note down the given values that is mass of the SUBTANCE as m kg heat energy as Q cal and the temperture s of the substcne as `t_(1)^(@)C` convert the heat energy and temperature of the substacne .WRITE the formula for heat energy gained or LOST by a BODY Q =`msDeltat` Calculate the specific heat CAPACITY of the substance

5.	Arrange the following steps in a sequential order to demonstrate the expansion of gases (a) Heat the test tube and observe the position of coloured drop in the narrow galsstube (b) Take a drop of coloured liquid in to naroorw galss tube (c ) Take an empty test tube fit its mouth wiht one holed cork stopper (d) Fit the narrow glass tube through the cork os that the level of the coloured drop is just above the cork (e ) The ari in the tube expands and pushes the colureddrop in the narrow tube upwards
Answer» bcade cbdae badce cadeb Solution :Take an empty TEST tube fit fits mouth with ONE holed cork STOPPER .Take a drop of coloured liquied into a narrow galss tube fit the narrow galss tube through the cork so that the level of the colured drop is just above the cork heat the tst tube and obser the positon of coloured drop in the narrow GLASS tube The trapped air in thetest tube expands and it pulses the coloured drop upwards

6.	Explain thermal expansion in solids byusing graves and ring and ball experiment.
Answer»

7.	Which phenomenon/phenomena of light is / are involved in the formation of a rainbow ?
Answer» ANSWER :RECTILINEAR PROPAGATION

8.	SI unit of area,volume,density is____
Answer» SOLUTION :NA

9.	During sublimation the solid substance which is converting to geseous state is called _________.
Answer» SOLUTION :During sublimation the SOLID substances which is converting to its GASEOUS state is CALLED SUBLIMATE

10.	A block is 8 cm long, 2 cm wide, and 3 cm high and has a mass 375 g. Compare the density of the block with the density of different substances in Table and find out what material the block is made of.
Answer» Solution :From the table given, it is found that steel has a density of `7.8 g// CM^(3)`. So the BLOCK is made of steel.

11.	Derive the relation between acceleration, change in velcoity and time.
Answer»

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