Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9th

# Question Bank Solutions for SSLC (English Medium) Class 9th - Tamil Nadu Board of Secondary Education - Science

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In going from a rarer to denser medium, the ray of light bends ______.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

The mirror used in search light is ______.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

The angle of deviation of light ray in a prism depends on the angle of ______.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

Match the following.

 1 Ratio of height of image to height of object. Concave mirror 2 Used in hairpin bends in mountains. Total internal reflection 3 Coin inside water appearing slightly raised. Magnification 4 Mirage Convex mirror 5 Used as Dentist’s mirror. Refraction
[0.06] Light
Chapter: [0.06] Light
Concept: Light

a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:

1. at C
2. between C and F
3. between F and P of the mirror.

b) Mention the position and nature of image in each case.

[0.06] Light
Chapter: [0.06] Light
Concept: Light

Calorie is the unit of ______.

[0.07] Heat
Chapter: [0.07] Heat
Concept: Heat and Its Unit

A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.

[0.07] Heat
Chapter: [0.07] Heat
Concept: Heat and Its Unit

Ice is kept in a double-walled container. Why?

[0.07] Heat
Chapter: [0.07] Heat
Concept: Heat and Its Unit

Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Sound travels in air:

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ______.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

The sound waves travel faster ______.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Sound is a ______ wave and needs a material medium to travel.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Number of vibrations produced in one second is ______.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Vibration of object produces ______.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Match the following.

 1 Tuning fork The point where density of air is maximum 2 Sound Maximum displacement from the equilibrium position. 3 Compressions The sound whose frequency is greater than 20,000 Hz. 4 Amplitude Longitudinal wave. 5 Ultasonics Production of sound.
[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Through which medium sound travels faster, iron or water? Give reason.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

How does the sound produced by a vibrating object in a medium reach your ears?

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

Describe with diagram, how compressions and rarefactions are produced.

[0.08] Sound
Chapter: [0.08] Sound
Concept: Sound

State whether true or false. If false, correct the statement.

Oil and water are immiscible with each other.

[0.1] Matter Around Us
Chapter: [0.1] Matter Around Us
Concept: Matter (Substance)
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