Please select a subject first
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How do we see objects around us ?
Concept: undefined >> undefined
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Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Concept: undefined >> undefined
Write true or false for a given statement.
A sound is a form of energy.
Concept: undefined >> undefined
Write true or false for a given statement.
Sound can only be produced by vibrating bodies.
Concept: undefined >> undefined
Write true or false for a given statement.
Larger is the amplitude, feeble is the sound.
Concept: undefined >> undefined
Write true or false for a given statement.
The frequency is measured in hertz.
Concept: undefined >> undefined
Write true or false for a given statement.
Loudness depends on frequency.
Concept: undefined >> undefined
Select the correct alternative
A thermometer uses
Concept: undefined >> undefined
Write true or false for a given statement.
A current-carrying coil, when suspended freely, can rest in any direction.
Concept: undefined >> undefined
Write true or false for a given statement.
Waveforms of two different stringed instruments can be the same.
Concept: undefined >> undefined
Write true or false for a given statement.
Female voice is shriller than the male voice.
Concept: undefined >> undefined
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
Concept: undefined >> undefined
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
Concept: undefined >> undefined
Fill in the blank.
The pitch of a sound depends on its ________.
Concept: undefined >> undefined
Fill in the blank.
We can hear sounds of frequency in the range of _______
Concept: undefined >> undefined
Fill in the blank.
________ produces a sensation in ears.
Concept: undefined >> undefined
Fill in the blank
Like poles ______ each other and unlike poles _____
Concept: undefined >> undefined
| Column A | Column B |
| (a) Vibrations cause | (1) absorb sound |
| (b) A shriller sound is | (2) second |
| (c) Unit of frequency | (3) sound |
| (d) Unit of time period | (4) of high pitch |
| (e) Curtains | (5) hertz |
Concept: undefined >> undefined
