TN State Board Samacheer Kalvi Online Test for 9th Std - Science - English - Law of Motions

Question 1 Of 10

The unit of ‘g’ is m s-2. It can be also expressed as

cm s–1 N kg–1 N m2 kg–1 cm2 s–2

Question 2 Of 10

One-kilogram force equals to

9.8 dyne 9.8 × 104 N 98 × 104 dyne 980 dyne

Question 3 Of 10

Plotting a graph for momentum on the X-axis and time on Y-axis. the slope of momentum- time graph gives

Impulsive force Acceleration 1/F) Rate of force

Question 4 Of 10

Inertia of a body depends on

weight of the object acceleration due to gravity of the planet mass of the object Both a & b

Question 5 Of 10

In which of the following sport the turning of effect of force used

swimming tennis cycling hockey

Question 6 Of 10

Impulse is equal to

rate of change of momentum rate of force and time change of momentum rate of change of mass

Question 7 Of 10

Newton’s III law is applicable

for a body is at rest for a body in motion both a and b only for bodies with equal masses

Question 8 Of 10

To project the rockets which of the following principle(s) is /are required?

Newton’s third law of motion Newton’s law of gravitation law of conservation of linear momentum both a and c

Question 9 Of 10

The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be kg

4 M 2M M/4 M

Question 10 Of 10

If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of a body on the Earth will

decrease by 50% increase by 50% decrease by 25% increase by 300%

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 9th Standard Science - English Medium - Law of Motions

Samacheer Kalvi 9th Science - Law of Motions - Book Back Questions in English Medium