Physics

# The dimensional formula for universal gravitational constant is:

${ M }^{ -1 }{ L }^{ 3 }{ T }^{ -2 }$

##### SOLUTION

The correct option is $D.$

Formula for Gravitational force is:

$F= \dfrac{G M m}{r^{2}}$

So, Formula for G will be,

$G = \dfrac{F r^{2}}{M m}$

Thus, the dimensional formula for G is,

$M^{-1}L^{3}T^{-2}$

You're just one step away

Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 204

#### Realted Questions

Q1 Single Correct Medium
In an experiment refractive index of glass was observed to be $1.45,1.56,1.54,1.44,1.54$ and $1.53$. The mean absolute error in the experiment is
• A. $0.04$
• B. $0.02$
• C. $0.03$
• D. $0.01$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
The period of osciflation of a simple pendulum in the recorded as $2.63 \,sec, 2.42 \,sec, 2.42 \,sec, 2.71 \,sec$ and $2.80 \,sec$ respectively. The average absolute error is
• A. $0.1 \,sec$
• B. $0.14 \,sec$
• C. $0.01 \,sec$
• D. $1.0 \,sec$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Quantity of matter contained in a body is ....................... .
• A. Mass
• B. density
• C. relative density
• D. Volume

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Assertion & Reason Medium
##### ASSERTION

Both velocity and speed have sante dimensions.

##### REASON

Velocity cannot be added to speed.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
Write down the number of significant figures in the following.
$62.00m$
• A. $four$
• B. $three$
• C. $two$
• D. $one$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020