Alpha particles possess greater penetration power than that of beta particles due to its_____________?
(A) Smaller ionization power
(B) Greater ionization power
(C) Neither greater nor smaller ionization power
(D) Same ionization power
Beta particles ionize an atom_________________?
(A) Due to the electrostatic force of attraction
(B) Due to the electrostatic force of repulsion
(C) Due to a direct collision
(D) Due to the gravitational force
Why gamma rays are used to kill bacteria to sterilize surgical equipment etc ?
(A) Chargeless
(B) Massless
(C) Highly penetrating
(D) All of above
In any measurement the significant figures are______________?
(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
Random errors can be reduced by_______________?
(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
The uncertainty in a measurement may occur due to_______________?
(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
The error in measurement may occur due to_________________?
(A) The inexperience of a person
(B) The faulty apprentice
(C) Inappropriate method
(D) Due to all reasons in A, B and C
Prefix deca represents_______________?
(A) 10 Raised to power 1
(B) 10 Raised to power 2
(C) 10 Raised to power 3
(D) 10 Raised to power -1
1024 can be written in scientific notation as______________?
(A) 1.024×103
(B) 2 Raised to power 10
(C) 0.000976
(D) 1/0.00097
In scientific notation, numbers are expressed in________________?
(A) Power of ten
(B) Powers of two
(C) Reciprocal
(D) Decimal