Physics MCQs

Physics

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Page 15 of 28

#113

If $A=BC$, with percentage errors $\Delta B\%=5\%$ and $\Delta C\%=10\%$, then $\Delta A\%$ is approximately:

A) $50\%$

B) $0\%$

C) $15\%$

D) $5\%$

Answer:   C
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#114

If $A=BC$, with percentage errors $\Delta B\%=4\%$ and $\Delta C\%=3\%$, then $\Delta A\%$ is approximately:

A) $7\%$

B) $0\%$

C) $12\%$

D) $1\%$

Answer:   A
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#115

If $A=BC$, with percentage errors $\Delta B\%=1\%$ and $\Delta C\%=2\%$, then $\Delta A\%$ is approximately:

A) $0\%$

B) $2\%$

C) $1\%$

D) $3\%$

Answer:   D
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#116

If $A=BC$, with percentage errors $\Delta B\%=3\%$ and $\Delta C\%=1\%$, then $\Delta A\%$ is approximately:

A) $4\%$

B) $0\%$

C) $3\%$

D) $2\%$

Answer:   A
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#117

The dimensions of momentum are:

A) $MLT^{-1}$

B) $ML^{2}T^{-2}$

C) $M^{0}LT^{-2}$

D) $M^{1}L^{0}T^{0}$

Answer:   A
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#118

The dimensions of pressure are:

A) $ML^{-1}T^{-2}$

B) $MLT^{-2}$

C) $M^{0}L^{1}T^{-1}$

D) $M^{1}L^{2}T^{-3}$

Answer:   A
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#119

The dimensions of surface tension are:

A) $MT^{-2}$

B) $ML^{0}T^{-2}$

C) $ML^{0}T^{-1}$

D) $ML^{-1}T^{-2}$

Answer:   D
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#120

Dimensional formula of Young’s modulus is the same as:

A) pressure

B) energy

C) force

D) momentum

Answer:   A
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Page 15 of 28