A metal wire has mass (0.4±0.002) g, radius (0.3±0.001) mm and length (5±0.02) cm. The maximum possible percentage error in the measurement of density will nearly be:
1. 1.4%
2. 1.2%
3. 1.3%
4. 1.6%

Subtopic:  Errors |
 53%
From NCERT
NEET - 2023
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The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:
1. Random errors 2. Instrumental errors
3. Personal errors 4. Least count errors
Subtopic:  Errors |
 71%
From NCERT
NEET - 2023
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The diameter of a spherical bob, when measured with vernier callipers yielded the values: 3.33 cm, 3.32 cm, 3.34 cm, 3.33 cm and 3.32 cm. The mean diameter to appropriate significant figures is:
1. 3.328 cm
2. 3.3 cm
3. 3.33 cm
4. 3.32 cm
Subtopic:  Measurement & Measuring Devices |
 58%
From NCERT
NEET - 2023
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The mechanical quantity, which has dimensions of reciprocal of mass (M1), is:
1. angular momentum
2. coefficient of thermal conductivity 
3. torque 
4. gravitational constant 
Subtopic:  Dimensions |
 59%
From NCERT
NEET - 2023
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The percentage error in the measurement of g is:
(Given,  g=4π2LT2,L=(10±0.1) cm, T=(100±1) s)
1. 2%
2. 5%
3. 3%
4. 7%
Subtopic:  Errors |
 77%
From NCERT
NEET - 2022
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The physical quantity that has the same dimensional formula as pressure is:
1. Force
2. Momentum
3. Young's modulus of elasticity
4. Coefficient of viscosity
Subtopic:  Dimensions |
 82%
From NCERT
NEET - 2022
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The determination of the value of acceleration due to gravity (g) by simple pendulum method employs the formula,
 g=4π2LT2
The expression for the relative error in the value of g is:
1. Δgg=ΔLL+2(ΔTT)
2. Δgg=4π2[ΔLL2ΔTT]
3. Δgg=4π2[ΔLL+2ΔTT]
4. Δgg=ΔLL2(ΔTT)

Subtopic:  Errors |
 79%
From NCERT
NEET - 2022
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When the circular scale of a screw gauge completes 2 rotations, it covers 1 mm over the pitch scale. The total number of circular scale divisions is 50. The least count of the screw gauge in metres is:
1. 104
2. 105
3. 102
4. 103

Subtopic:  Measurement & Measuring Devices |
 56%
From NCERT
NEET - 2022
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The area of a rectangular field (in m2) of length 55.3 m and breadth 25 m after rounding off the value, for correct significant digits is:
1. 14×102
2. 138×101
3. 1382
4. 1382.5
Subtopic:  Significant Figures |
 62%
From NCERT
NEET - 2022
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The dimensions [MLT2A2] belong to the:
1. electric permittivity
2. magnetic flux
3. self-inductance
4. magnetic permeability
Subtopic:  Dimensions |
From NCERT
NEET - 2022
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