Test - Physics & Measurement
1. The dimensional formula of Planck’s constant is:
A) ML²T⁻¹
B) ML²T⁻²
C) ML²T⁻³
D) MLT⁻²
2. The significant figures in 0.00250 are:
A) 2
B) 3
C) 4
D) 5
3. Which instrument measures very small currents accurately?
A) Ammeter
B) Galvanometer
C) Voltmeter
D) Potentiometer
4. If the length is measured as 2.50 m with an error of ±0.01 m, the relative error is:
A) 0.4%
B) 0.2%
C) 0.25%
D) 0.5%
5. The unit of solid angle is:
A) Radian
B) Steradian
C) Degree
D) Candela
6. The dimension of impulse is the same as:
A) Momentum
B) Energy
C) Force
D) Power
7. The number 3.045 × 10³ has how many significant figures?
A) 4
B) 3
C) 5
D) 2
8. A measurement is recorded as 4.250 m. The last digit implies:
A) Estimated value
B) Exact value
C) Zero error
D) No error
9. Which of the following is NOT a fundamental quantity?
A) Length
B) Mass
, C) Time
D) Force
10. The least count of a vernier caliper is:
A) 1 mm
B) 0.1 mm
C) 0.01 cm
D) Depends on instrument
11. The error which occurs due to faulty calibration is called:
A) Random error
B) Systematic error
C) Gross error
D) Personal error
12. The dimension of pressure is:
A) ML⁻¹T⁻²
B) MLT⁻²
C) ML²T⁻²
D) MLT⁻¹
13. Which instrument is used to measure potential difference accurately?
A) Potentiometer
B) Voltmeter
C) Ammeter
D) Meter bridge
14. Dimensional formula for universal gravitational constant G:
A) M⁻¹L³T⁻²
B) MLT⁻²
C) M⁻²L²T⁻²
D) MLT⁻¹
15. Which one is a derived quantity?
A) Length
B) Mass
C) Time
D) Work
16. Two quantities A and B have errors 2% and 3% respectively. The maximum error in A+B
is:
A) 5%
B) 3%
C) 2%
D) Cannot be determined
17. The significant figures in 0.0600 are:
A) 4
B) 3
C) 2
D) 1
18. Which of these is a dimensionless quantity?
A) Strain
B) Stress
1. The dimensional formula of Planck’s constant is:
A) ML²T⁻¹
B) ML²T⁻²
C) ML²T⁻³
D) MLT⁻²
2. The significant figures in 0.00250 are:
A) 2
B) 3
C) 4
D) 5
3. Which instrument measures very small currents accurately?
A) Ammeter
B) Galvanometer
C) Voltmeter
D) Potentiometer
4. If the length is measured as 2.50 m with an error of ±0.01 m, the relative error is:
A) 0.4%
B) 0.2%
C) 0.25%
D) 0.5%
5. The unit of solid angle is:
A) Radian
B) Steradian
C) Degree
D) Candela
6. The dimension of impulse is the same as:
A) Momentum
B) Energy
C) Force
D) Power
7. The number 3.045 × 10³ has how many significant figures?
A) 4
B) 3
C) 5
D) 2
8. A measurement is recorded as 4.250 m. The last digit implies:
A) Estimated value
B) Exact value
C) Zero error
D) No error
9. Which of the following is NOT a fundamental quantity?
A) Length
B) Mass
, C) Time
D) Force
10. The least count of a vernier caliper is:
A) 1 mm
B) 0.1 mm
C) 0.01 cm
D) Depends on instrument
11. The error which occurs due to faulty calibration is called:
A) Random error
B) Systematic error
C) Gross error
D) Personal error
12. The dimension of pressure is:
A) ML⁻¹T⁻²
B) MLT⁻²
C) ML²T⁻²
D) MLT⁻¹
13. Which instrument is used to measure potential difference accurately?
A) Potentiometer
B) Voltmeter
C) Ammeter
D) Meter bridge
14. Dimensional formula for universal gravitational constant G:
A) M⁻¹L³T⁻²
B) MLT⁻²
C) M⁻²L²T⁻²
D) MLT⁻¹
15. Which one is a derived quantity?
A) Length
B) Mass
C) Time
D) Work
16. Two quantities A and B have errors 2% and 3% respectively. The maximum error in A+B
is:
A) 5%
B) 3%
C) 2%
D) Cannot be determined
17. The significant figures in 0.0600 are:
A) 4
B) 3
C) 2
D) 1
18. Which of these is a dimensionless quantity?
A) Strain
B) Stress
