| Science (Practice Test-1) |
1. Which of the following physical quantities has no unit.
- Density
- Mass
- Volume
- Relative density
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Relative density [/su_spoiler]
2. Which of the following physical quantity which has same unit in all the system.
- Mass
- Area
- Length
- Time
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Time [/su_spoiler]
3. Velocity of sound will be minimum in-
- In liquid
- In mercury
- Solid
- In gas
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] In gas [/su_spoiler]
4. If the focal length of a concave lens is 20 cm its power is-
- 2 D
- -2 D
- 5 D
- -5 D
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] -2 D [/su_spoiler]
5. Which of the following is a vector quantity.
- Temperature
- Work
- Pressure
- Momentum
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Momentum [/su_spoiler]
6. Which colour has minimum refractive index-
- Red
- Violet
- Yellow
- Green
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Red [/su_spoiler]
7. Frequency of intrasonic wave is-
- Between 20 Hz and 20,000 Hz
- More than 20 Hz
- More than 20,000 Hz
- Less then 20 Hz.
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Less then 20 Hz. [/su_spoiler]
8. Pascal is a unit of –
- pressure
- force
- movement
- energy
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] pressure [/su_spoiler]
9. Photo chemical reaction are caused by –
- Electrical energy
- Absorption of light
- Dissipation if light
- None of these
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] Absorption of light [/su_spoiler]
10. Angstrom is the unit used for measuring very small lenths such a wave lengths of light is equal to-
- 10⁻⁶ cm
- 10⁻⁸ cm
- 10⁻¹² cm
- 10⁻¹⁵ cm
[su_spoiler title=”Answer” style=”fancy” icon=”caret”] 10⁻⁸ cm [/su_spoiler]