381 Dimensional analysis is helpful for__________________? Physics Medium Full question → A Deriving a possible formula B Checking the homogeneity of a physical equation C Verification of laws D Only A and B are correct
382 ML-1 T-2 is the dimension of_______________? Physics Medium Full question → A Force B Pressure C Momentum D Energy
383 The dimension of force is__________________? Physics Medium Full question → A MLT-1 B MLT-2 C ML-1T D ML-1T-2
384 Smaller the least count of the instrument more is the measurement________________? Physics Medium Full question → A Accurate B Precise C Accurate and precise D None of these
385 Number of significant figures in 0.0173 is_________________? Physics Medium Full question → A 3 B 4 C 5 D 2
386 A digit zero in a measurement__________________? Physics Medium Full question → A May be significant may not significant B Always significant C Always insignificant sign D Significant only if left to a significant figure
387 In any measurement the significant figures are______________? Physics Medium Full question → A All accurately known and all doubtful digits B Only accurately known digits C Only doubtful digits D All accurately known digits and the first doubtful digit
388 Random errors can be reduced by_______________? Physics Medium Full question → A Taking zero correction B Comparing the instrument with another more accurate one C Taking mean of several measurements D All methods explained in A, B and C
389 The uncertainty in a measurement may occur due to_______________? Physics Medium Full question → A Limitation of an instrument B Natural variation of the object to be measured C Inadequate technique D All given in A, B and C
390 The error in measurement may occur due to_________________? Physics Medium Full question → A The inexperience of a person B The faulty apprentice C Inappropriate method D Due to all reasons in A, B and C
391 Prefix deca represents_______________? Physics Medium Full question → A 10 Raised to power 1 B 10 Raised to power 2 C 10 Raised to power 3 D 10 Raised to power -1
392 1024 can be written in scientific notation as______________? Physics Medium Full question → A 1.024×103 B 2 Raised to power 10 C 0.000976 D 1/0.00097
393 In scientific notation, numbers are expressed in________________? Physics Medium Full question → A Power of ten B Powers of two C Reciprocal D Decimal
395 The number of categories in which physical quantities are divided is_____________? Physics Medium Full question → A 1 B 2 C 3 D 4
396 Which one is not a branch of physical sciences ? Physics Medium Full question → A Chemistry B Astronomy C Geology D Biology
397 Which branch of science plays an important role in the development of technology and engineering ? Physics Medium Full question → A Chemistry B Physics C Geology D Biology
398 Radiations are used for the treatment of skin of a patient is_______________? Physics Medium Full question → A Alpha rays B Gamma rays C Beta rays D X-rays
399 The maximum safe limit dose for persons working in a nuclear power station is ________________? Physics Medium Full question → A 1 rem per week B 5 rem per week C 4 rem per week D 3 rem per week
400 Which of the following will be a better shield against gamma rays ? Physics Medium Full question → A Ordinary water B Heavy water C Lead D Aluminum