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UNIT I: Nature of Physical World and Measurement
- Online Test
UNIT I: Nature of Physical World and Measurement
TEST : 1
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q1.
One of the combinations from the fundamental physical constants is hc/G . The unit of this expression is
A.
Kg
2
B.
m
3
C.
S
-1
D.
m
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q2.
If the error in the measurement of radius is 2%, then the error in the determination of volume of the sphere will be
A.
8%
B.
2%
C.
4%
D.
6%
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q3.
If the length and time period of an oscillating pendulum have errors of 1% and 3% respectively then the error in measurement of acceleration due to gravity is
A.
4%
B.
5%
C.
6%
D.
7%
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q4.
The length of a body is measured as 3.51 m, if the accuracy is 0.01mm, then the percentage error in the measurement is
A.
351%
B.
1%
C.
0.28%
D.
0.035%
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q5.
Which of the following has the highest number of significant figures?
A.
0.007 m
2
B.
2.64x10
24
kg
C.
0.0006032 m
2
D.
6.3200 J
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q6.
If π = 3.14, then the value of π
2
is
A.
9.8596
B.
9.860
C.
9.86
D.
9.9
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q7.
Which of the following pairs of physical quantities have same dimension?
A.
force and power
B.
torque and energy
C.
torque and power
D.
force and torque
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q8.
The dimensional formula of Planck's constant h is
A.
[ML
2
T
-1
]
B.
[ML
2
T
-3
]
C.
[MLT
-1
]
D.
[ML
3
T
-3
]
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q9.
The velocity of a particle v at an instant t is given by v=at+bt
2
. The dimensions of b is
A.
[L]
B.
[LT
-1
]
C.
[LT
-2
]
D.
[LT
-3
]
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
# UNIT I: Nature of Physical World and Measurement
# TN 11th Physics
Prepare / Learn
Q10.
The dimensional formula for gravitational constant G is
A.
[ML
3
T
-2
]
B.
[M
-1
L
3
T
-2
]
C.
[M
-1
L
-3
T
-2
]
D.
[ML
-3
T
2
]
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
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