Question

QUICK ATTEMPT
A. Choose the correct answer.
1. Which of the following is not true about force?
(a) Force can produce motion in a stationary body
(b) Force can stop a moving body.
(c) Force can change the speed of a moving body
(d) Force can change the mass of a body.
2. Force of 1 N is equal to
(a) 1 kgf
(b) i gf
(c) 10% dyne
(d) 10 dyne
3. The SI unit of moment of force is
(a) Nm
(b) kgf m
(c) dyne cm
(d) dyne m
4. Which of the following devices is used to measure force?
(a) Beam balance
(b) Physical balance
(c) Spring balance
(d) Eureka can
5. Which of the following expressions is the correct representation of pressure?
F
(a) P = A XF
(b) P=-
А
А
(d) P=
F
AXE
6. If the area of contact is reduced for given applied force, the pressure
(a) increases
(b) decreases
(c) remains the same
(d) first decreases then increases
7. What will be the pressure if force of 50 N acts normally on an area of 2.5 m?
(a) 100 Pa
(b) 110 Pa
(c) 20 Pa
(d) 50 Pa
​

Answer 1

Answer:

1. Option (d)

2.Option (b)

3.Option (b)

4.Option (c)

5.Option (d)

6.Option (a)

7. Option (b)

Explanation:

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