Home
Class 11
PHYSICS
(A) : To unscrew a rusted nut, we need a...

(A) : To unscrew a rusted nut, we need a wrench with longer arm.
(R ) : Wrench with longer arm reduces the torque of the arm.

A

Both 'A' and 'R' are true 'R' is the correct explanation of 'A'

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

A' is true and 'R' is false

D

A' is false and 'R' are true

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

"A wrench of longer arm as compared to a wrench of shorter arm is preferred." Why?

A U-tube having unequal arm-lengths has water in it. A tuning fork of frequency 440 Hz can set up the air in the shorter arm in its fundamental mode of vibration and the same tuning fork can set up the air in the longer arm in its first overtone vibration. Find the length of the air columns Neglect any end effect and assume that the speed of sound in air = 330 ms^-1

The shorter and longer arms of a submetacentric chromosome are referred to as :

A nut is opened by a wrench of length 10cm. IF the least force required is 5.0N, find the moment of force needed to turn the nut.

In a Wheatstone's brigde all the four arms have equal resistance R . If the resistance of the galvanometer arm is also R , the equivalent resistance of the combination as seen b the battery is

A tube of fine bore AB is connected to a manomeer M as shown. The stop cock S controls the flow in air. AB is dipped into a liquid whosw surface tension is sigma . On opening the stop cock for a while, a bubble is formed at B and the manometer level is recorded, showing a difference h in the levels in the two arms. If rho be the density of manometer liquid and r the radius of curvature of the bubble, then the surface tension sigma of the liquid is given by

A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut.

A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut.

L-shaped chromosomes are called " " Or When the chromosome has a centromere nearer to one end of the chromosome resulting into one shorter and one longer arm, the chromosome is termed as

[A]: Blood pressure can be measured with a sphygmomanometer in the arm. [R]: In our body, blood flows with a great pres- sure only through arms