Physical Quantities & Units

Q: Dimension of mass is written as :

(a) :   M
(b) :   [M]
(c) :   (M)
(d) :   [m}
(e) :  None of the Above
Answer:   [M]
Explanation:  

Q: Time taken by light from sun to reach Earth is:

(a) :  500 seconds
(b) :  600 seconds
(c) :  400 seconds
(d) :  700 seconds
(e) :  None of the Above
Answer:  500 seconds
Explanation:  

Q: Dimension of 1/2 at2 in the equation of motion are :

(a) :   [ML0T0]
(b) :   [M0L0T]
(c) :   [M0LT0]
(d) :   [1/2M0L0T]
(e) :  None of the Above
Answer:   [M0LT0]
Explanation:  

Q: Deca,deci and mega, respectively mean:

(a) :  101,10-1,106
(b) :  106,10-1,101
(c) :  106,101,10-1
(d) :  101,106,10-1
(e) :  None of the Above
Answer:  101,10-1,106
Explanation:  

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