**Questions**

1. The Screw gauge works on the principle of _____

2. The Scale present on index line of screw gauge is called as ____

3. Screw guage consists of _____ scale and ____ scale.

4. Pitch of the screw P = _____ / No.of revolutions made.

5. L.C. of a Screw guage = pitch of the screw / ____

6. If the Zeroth division of the head scale in below the indexline of the pitch scale, the error is said to be _____ and the correction is _____

7. If 'p' is the pitch of the scale and 'N' is no.of head scale divisions them L.C.= _____

8. If screw moves 5mm for 5 revolutions, the pitch of the screw is _____

9. If a screw consists 200 head scale divisions which contains pitch as 1mm then the least count is _____

10. If the L.C. is 0.01 mm, Pitch scale reading is 1.5 mm and the headscale reading is 18, then the diametre of the object is ____

**Answers:**

1. Screw 2. Pitch Scale

3. Pitch, head

4. Distance travelled by the Screw

5. No.of head scale divisions

6. Positive, negative

7. P/N 8. 1 mm

9. 0.005mm

10. 1.68 mm

**Questions:**

1. The value of the universal gravitational constant is ____

2. The weight of 400g stone is _____ N

3. Units for 'G' in SI System ____

4. Ptolemaic theory is also known as ____

5. As per Kepler's theory, the planet revolves around sun in_____ path.

6. Universal law of gravitation is applicable at _____

7. Kepler's law supports _____ theory

8. Heliocentric theory is proposed by _____

9. Units of acceleration due to gravity is _____

10. Acceleration due to gravity at poles is______ and at equator it is _____

**Answers:**

1. 6.67×10–11Nm2Kg–2 2. 3.9 N

3. Nm2Kg–2

4. Geocentric theory

5. Elliptical

6. Anywhere in the universe

7. Heliocentric theory

8. Copornicus

9. mg–2

10. Maximum, Minimum