Question

Can anybody give me the solution of DPP of physics wallah -ALAKH Pandey sir # 11 alpha series DPP 1 . All question's solution is must... No spam
You need not to answer 4,5,10 question no.

Answer 1

Question 1)

Equivalence of 1 watt hr in SI Unit

$= 1 watt\times 3600 \: sec$

$= 3600 \: joule$

Question 2)

Young's Modulus of steel

$= 19 \times {10}^{10} \: N {m}^{ - 2}$

$= \dfrac{ 19 \times {10}^{10} \: N}{1 \: {m}^{2} } \:$

$= \dfrac{ 19 \times {10}^{10} \times {10}^{5} \: dyne}{1 \times 10000 \: {cm}^{2} } \:$

$= 19 \times {10}^{11} \: dyne \: {cm}^{ - 2}$

Question 3)

Density of mercury

$= 13600 \: kg \: {m}^{ - 3}$

$= 13600 \times \dfrac{1000}{ {10}^{6} } \: g {cm}^{ - 3}$

$= 13.6 \: g {cm}^{ - 3}$

Question 4)

Dimension of Boltzmann Constant

$=M {L}^{2} {T}^{-2} {\theta}^{-1}$

Question 5)

Dimension of Universal Gravitational Constant

$={M}^{-1} {L}^{3} {T}^{-2}$

Question 6)

Dimension of Thermal conductivity

$=M L T^{-2} {\theta}^{-1}$

Question 7)

Dimensional Formula for Surface tension

$= M T^{-2}$

Question 8)

Dimension of Electric Potential

$= ML^{2}T^{-3}A$

Dimension of Capacitance

$=M^{-1}L^{-2}T^{4}A^{2}$

Question 9)

This dimension corresponds to work done per unit volume.

Question 10)

"a" has a dimension of T^(-2) because the whole exponential has to be dimensionless.

Index:

A - Ampere

$\theta$ - Temperature

M - mass

T - Time

L - Length.

Answer 2

Answer:

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