(9x1=9)
ANSWER ALL QUESTIONS:
1 Which of the following pairs has the same dimension?
(a) Specific heat & latent heat (b) Impulse & mom entum
(c) Surface tension & force (d) Moment of inertia & Torque
2. The dimensions of kinetic energy is same as that of
(a) Force () Pressure (c) Work (d) Momentum
3. This form of matter does have a definite shape and size
(a) Solids () Liquids (c) Gases (d) Colloids
4. What is sublimation?
(a) When a solid turns into a gas (b) When a gas turns into a solid
(c) When a gas turns into a liquid (d) When a liquid turns into a solid
5. How does the potential energy transfer to kinetic energy?
(a) When an object remains at rest and changes up
(b) When an outside force acts upon an object causing it to move
(c) When an object cools down
(d) Potential energy cannot become kinetic energy
6. Which of the following is not an example of mechanical energy?
(a) Kinetic energy () Potential energy (c) Internal energy (d) All the above
7. What is the greenhouse gas emitted when you burn fossil fuel?
(a) Carbon dioxide ) Carbon monoxide (c) Fluorine monoxide (d) Chlorine fluorid.
8 Image formed by plane mirror is
(a) Real & erect ) Red & inverted (c) Virtual & wreet (d) Virtual & inverted
9. Aconcave muror prve real, inverted & same mze image if the object is placed
(*) F (6) Infinity (c) (d) beyondo
Answers
Answer:
1
C
2
a
3
C
4
A
5
c
6
D
7
A
8
D
9
C
All answer
1. The pairs from the given that has the same dimension is (C) Surface tension & force
2. The dimensions of kinetic energy is the same as that of (a) Force
3. The form of matter that does have a definite shape and size is (a) Solids
4. Sublimination is the process of (a) when a solid turns into a gas
5. The potential energy transfer to kinetic energy (c) when an object cools down.
6. The option that is not an example for mechanical energy is (d) all of the above
7. The greenhouse gas that is emitted when fossil fuel is burnt is (d) chlorine fluoride.
8. The image formed by a plane mirror is (d) virtual and inverted.
9. a concave mirror forms a real inverted and same size image if the object is placed (d) beyond N