1: Which of the following is not a unit of energy?

Difficulty: easy

Choose the correct option

A: Kilowatt

B: erg

C: joule

D: kilowatt-hour

2: Which physical quantity measured in meters?

Difficulty: easy

Choose the correct option

A: Light year

B: Breadth

C: Diameter

D: All of the above

3: Which physical quantity has unit ampere-hour?

Difficulty: easy

Choose the correct option

A: Electric charge

B: Electric current

C: Power

D: Electric potential

4: Light year is a unit of

Difficulty: easy

Choose the correct option

A: Intensity of light

B: Temperature

C: Time

D: Distance

5: One light year is equal to

Difficulty: easy

Choose the correct option

A: 9.46×10¹⁵ cm

B: 9.46×10¹⁵ m

C: 9.46×10¹⁵ km

D: 9.46×10¹⁵ miles

6: SI unit of coefficient of viscosity is

Difficulty: moderate

Choose the correct option

A: Kg m^-2 s^-1

B: Kg m^-1 s^-1

C: Kg m^-1 s^-2

D: Kg m s

7: The scientific notation of a number 0.00367 is expressed as

Difficulty: moderate

Choose the correct option

A: 3.67×10^-3

B: 3.67×10³

C: 3.67×10^-2

D: 3.67×10^-5

8: The scientific notation of a number 423.7 is expressed as

Difficulty: easy

Choose the correct option

A: 0.4237×10^-3

B: 4.237×10²

C: 0.4237×10³

D: 4.237×10^-2

9: Number of seconds in one day is

Difficulty: easy

Choose the correct option

A: 10,000 sec

B: 86400 sec

C: 1440 sec

D: 3600 sec

10: The uncertainty may occur due to

Difficulty: easy

Choose the correct option

A: Limitation of an instrument

B: Limitation of human senses

C: Natural variance of the object

D: All of these

11: In any measurement the accurately known digits and the first doubtful digit are called

Difficulty: moderate

Choose the correct option

A: Whole numbers

B: Fractional numbers

C: Significant figures

D: Random number

12: Significant figures in 0.00100 are

Difficulty: easy

Choose the correct option

A: Two

B: Three

C: Four

D: Six

13: Significant figures in 8.79×10⁴ are

Difficulty: easy

Choose the correct option

A: Two

B: Three

C: Four

D: Six

14: The length of floor tile is 0.333m while its breadth is 0.278m. Find its area in significant figures

Difficulty: moderate

Choose the correct option

A: 0.092 m²

B: 0.0926 msup>2

C: 0.092574 msup>2

D: 0.93 msup>2

15: The number 54.350 is rounded off as

Difficulty: easy

Choose the correct option

A: 4.36

B: 4.35

C: 54.46

D: 54.4

16: The length of an object is recorded as 25.5 cm by using the meter rod graduated mm, the absolute uncertainty in the reading is

Difficulty: easy

Choose the correct option

A: ±0.1 cm

B: ±0.1 mm

C: ±0.05cm

D: ±0.05mm

17: Which of the following measurement is more precise?

Difficulty: easy

Choose the correct option

A: 3127 s

B: 312.7 s

C: 312.7 s

D: 3.127 s

18: Which one of the following type is uncertainty?

Difficulty: easy

Choose the correct option

A: Fractional

B: Percentage

C: Absolute

D: All of these

19: In color printing, the whole range of colors can be obtained by mixing

Difficulty: easy

Choose the correct option

A: Seven colors

B: Three colors

C: Four colors

D: Infinite

20: Which of following is most precise instruments?

Difficulty: moderate

Choose the correct option

A: Meter rod

B: Screw gauge

C: Vernier caliper

D: All of these

21: In addition and subtraction

Difficulty: easy

Choose the correct option

A: Percentage uncertainties are added

B: Percentage uncertainties are subtracted

C: Absolute uncertainties are added

D: Absolute uncertainties are subtracted

22: In multiplication and division

Difficulty: easy

Choose the correct option

A: Percentage uncertainties are added

B: Percentage uncertainties are subtracted

C: Absolute uncertainties are added

D: Absolute uncertainties are subtracted

23: Percentage error in the measurement of voltage and current are 2% and 6% respectively. How much will be uncertainty in the value of resistance.

Difficulty: moderate

Choose the correct option

A: 11%

B: 0.33%

C: 8%

D: 3%

24: If the error in the measurement of radius of a sphere is 1%, then the error in the measurement of volume will be

Difficulty: easy

Choose the correct option

A: 3%

B: 5%

C: 8%

D: 1%

25: Absolute uncertainties are added in following operation.

Difficulty: easy

Choose the correct option

A: Multiplication

B: Division

C: Subtraction

D: None

26: In a simple pendulum experiment, percentage errors in L and T are 0.1% and 2% respectively. What is maximum percentage error in LT²?

Difficulty: easy

Choose the correct option

A: 4.1%

B: 3%

C: 5%

D: 2.1%

27: Which one of the following quantities has same dimensions (a) torque (b) energy (c) work?

1: Which of the following is not a unit of energy?

A: Kilowatt

B: erg

C: joule

D: kilowatt-hour

2: Which physical quantity measured in meters?

A: Light year

B: Breadth

C: Diameter

D: All of the above

3: Which physical quantity has unit ampere-hour?

A: Electric charge

B: Electric current

C: Power

D: Electric potential

4: Light year is a unit of

A: Intensity of light

B: Temperature

C: Time

D: Distance

5: One light year is equal to

A: 9.46×1015 cm

B: 9.46×1015 m

C: 9.46×1015 km

D: 9.46×1015 miles

6: SI unit of coefficient of viscosity is

A: Kg m-2 s-1

B: Kg m-1 s-1

C: Kg m-1 s-2

D: Kg m s

7: The scientific notation of a number 0.00367 is expressed as

A: 3.67×10-3

B: 3.67×103

C: 3.67×10-2

D: 3.67×10-5

8: The scientific notation of a number 423.7 is expressed as

A: 0.4237×10-3

B: 4.237×102

C: 0.4237×103

D: 4.237×10-2

9: Number of seconds in one day is

A: 10,000 sec

B: 86400 sec

C: 1440 sec

D: 3600 sec

10: The uncertainty may occur due to

A: Limitation of an instrument

B: Limitation of human senses

C: Natural variance of the object

D: All of these

11: In any measurement the accurately known digits and the first doubtful digit are called

A: Whole numbers

B: Fractional numbers

C: Significant figures

D: Random number

12: Significant figures in 0.00100 are

A: Two

B: Three

C: Four

D: Six

13: Significant figures in 8.79×104 are

A: Two

B: Three

C: Four

D: Six

14: The length of floor tile is 0.333m while its breadth is 0.278m. Find its area in significant figures

A: 0.092 m2

B: 0.0926 msup>2

C: 0.092574 msup>2

D: 0.93 msup>2

15: The number 54.350 is rounded off as

A: 4.36

B: 4.35

C: 54.46

D: 54.4

16: The length of an object is recorded as 25.5 cm by using the meter rod graduated mm, the absolute uncertainty in the reading is

A: ±0.1 cm

B: ±0.1 mm

C: ±0.05cm

D: ±0.05mm

A: 9.46×10¹⁵ cm

B: 9.46×10¹⁵ m

C: 9.46×10¹⁵ km

D: 9.46×10¹⁵ miles

A: Kg m^-2 s^-1

B: Kg m^-1 s^-1

C: Kg m^-1 s^-2

A: 3.67×10^-3

B: 3.67×10³

C: 3.67×10^-2

D: 3.67×10^-5

A: 0.4237×10^-3

B: 4.237×10²

C: 0.4237×10³

D: 4.237×10^-2

13: Significant figures in 8.79×10⁴ are

A: 0.092 m²

26: In a simple pendulum experiment, percentage errors in L and T are 0.1% and 2% respectively. What is maximum percentage error in LT²?

A: m=E/c²

B: m=c² /E

C: m=c² E

A: [MLT^-1]

B: [M² L² T^-1]

C: [ML² T^-2]

D: [MLT^-2]

A: M^{0L^1T⁰}

B: M¹L¹T¹

C: M¹L²T^-1

D: M^-1L^-1T¹