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

The Planck constant is $6.626 imes 10^{-34}$ J s. Express this in units of eV s (electron-volt seconds), given 1 eV = $1.602 imes 10^{-19}$ J.

A

$4.136 imes 10^{-15}$ eV s

B

$1.062 imes 10^{-52}$ eV s

C

$2.418 imes 10^{14}$ eV s

D

$6.626 imes 10^{-15}$ eV s

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Unit Conversion, Energy, Planck's Constant

Related Questions

A solution has a concentration of 20 g/L. Express this concentration in mg/mL.

A

0.02 mg/mL

B

2 mg/mL

C

20 mg/mL

D

200 mg/mL

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :unit conversion, concentration

The ratio of SI. Unit of the CGS unit of Planck’s constant is

A

${10^7}:1$

B

${10^4}:1$

C

${10^6}:1$

D

$1:1$

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 :Planck's constant, SI units, CGS units, unit conversion

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

The density of a substance is 2 g/cm³. What is its density in kg/m³?

A

0.002 kg/m³

B

0.2 kg/m³

C

200 kg/m³

D

2000 kg/m³

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :unit conversion, density

A force of 5 dyne is applied on a body. Express this force in Newtons.

A

5 x 10^5 N

B

5 x 10^-5 N

C

5 N

D

0.5 N

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :unit conversion, force

The wavelength of a light wave is 500 nm. Express this wavelength in meters.

A

5 x 10^-9 m

B

5 x 10^-7 m

C

5 x 10^7 m

D

5 x 10^9 m

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :unit conversion, wavelength, scientific notation

The ratio of SI. Unit of the CGS unit of Planck’s constant is

A

${10^7}:1$

B

${10^4}:1$

C

${10^6}:1$

D

$1:1$

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 :Planck's constant, SI units, CGS units, unit conversion

A rectangular field is 200 m long and 150 m wide. What is its area in hectares?

A

2 hectares

B

3 hectares

C

4 hectares

D

5 hectares

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Unit Conversion, Area

100 cm is equivalent to how many kilometers?

A

0.01 km

B

0.1 km

C

1 km

D

0.001 km

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Unit Conversion, Length

A pressure of 1 atmosphere is equal to how many Pascals?

A

1013.25 Pa

B

101325 Pa

C

101.325 Pa

D

10.1325 Pa

Question Tags

📚 Subject:Physics

📑 Chapter:Units And Measurement

🎯Topic:Conversion Of Units For One System To Another

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Unit Conversion, Pressure

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