NEET Physics MCQ: NCERT Unit Conversion | NEET.Guide Questions

The speed of light is approximately $3 imes 10^8$ m/s. If a star is 4 light-years away, what is its distance in kilometers? (1 light-year = distance light travels in one year)

A

$3.8 imes 10^{10}$ km

B

$1.2 imes 10^{13}$ km

C

$3.8 imes 10^{13}$ km

D

$1.2 imes 10^9$ km

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :3 mins

🔄Ncert Concepts :Unit Conversion, Speed, Distance, Time

Related Questions

If C,R,L and I denote capacity, resistance, inductance and electric current respectively, the quantities having the same dimensions of time are $\left( 1 \right)\,CR,\,\,\left( 2 \right)\,\frac{L}{R}\,,\,\,\left( 3 \right)\,\sqrt {LC} \,\,\left( 4 \right)\,L{I^2}$

A

(1) only

B

(1) and (2) only

C

(1), (2) and (3)

D

(1), (2), (3) and (4)

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Dimensional Analysis, RC time constant, L/R time constant, LC Oscillations

The dimensions of farad are

A

${M^{ - 1}}{L^{ - 2}}{T^2}{Q^2}$

B

${M^{ - 1}}{L^{ - 2}}TQ$

C

${M^{ - 1}}{L^{ - 2}}{T^{ - 2}}Q$

D

${M^{ - 1}}{L^{ - 2}}T{Q^2}$

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :capacitance, dimensional analysis, charge, mass, length, time

Which has not the same unit as other?

A

Work

B

Energy

C

Power

D

Momentum

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :energy, units of energy, power, time

If force (F), mass (M), length (L) are taken as fundamental quantities, dimensions of the time will be

A

$\left[ {MLF} \right]$

B

$\left[ {ML{F^{ - 1}}} \right]$

C

$\left[ {{M^{1/2}}{L^{1/2}}{F^{1/2}}} \right]$

D

$\left[ {{M^{1/2}}{L^{1/2}}{F^{ - 1/2}}} \right]$

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Dimensional Analysis, Fundamental Quantities, Force, Mass, Length, Time

The unit of L/R is (where L=inductance and R= Resistance)

A

Sec

B

$Se{c^{ - 1}}$

C

Volt

D

Ampere

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Inductance, Resistance, Time Constant, Units Analysis

The speed of light is approximately $3 imes 10^8$ m/s. If a star is 4 light-years away, what is its distance in kilometers? (1 light-year = distance light travels in one year)

A

$3.8 imes 10^{10}$ km

B

$1.2 imes 10^{13}$ km

C

$3.8 imes 10^{13}$ km

D

$1.2 imes 10^9$ km

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :3 mins

🔄Ncert Concepts :Unit Conversion, Speed, Distance, Time

Dimensions of CR are those of

A

Frequency

B

Energy

C

Time period

D

Current

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Capacitance, Resistance, Time Constant, Dimensional Analysis

From the dimensional consideration, which of the following equation is correct

A

T = \sqrt{\frac{L}{g}}

B

T = 2π\sqrt{\frac{g}{L}}

C

T = 2π\sqrt{\frac{l}{G}}

D

T = 2π\sqrt{\frac{R^2}{GM}}

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Dimensional analysis, Time period of a satellite, Gravitational constant

Dimensional formula for force is

A

$\left[ {{M^1}{L^2}{T^{ - 2}}} \right]$

B

$\left[ {{M^1}{L^1}{T^{ - 2}}} \right]$

C

$\left[ {{M^1}{L^{ - 1}}{T^{ - 2}}\;} \right]$

D

$\left[ {{M^1}{L^{ - 2}}{T^{ - 2}}} \right]$

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Dimensional Analysis, Force, Mass, Length, Time

Solar constant is defined as energy received by earth per ${\rm{c}}{{\rm{m}}^2}$ per minute. The dimensions of solar constant are

A

$\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 3}}} \right]$

B

$\left[ {{{\rm{M}}^2}{{\rm{L}}^0}{{\rm{T}}^{ - 1}}} \right]$

C

$\left[ {{\rm{M}}{{\rm{L}}^0}{{\rm{T}}^{ - 3}}} \right]$

D

$\left[ {{\rm{ML}}{{\rm{T}}^{ - 2}}} \right]$

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Dimensional Analysis, Energy, Area, Time

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