10th Class Physics MCQS Chapter 4

The unit of intensity of sound:

Wm^-2

Wm

Wm ¹

Wm²

Bats can hear sound of frequency up to:

120, 000Hz

25000Hz

1000Hz

100,000Hz

1 Pico Farad is equal to:

10^-12F

10 ⁶F

10 ⁹F

10¹²F

One micro coulomb charge is equal to:

10³C

10⁶C

10^-6C

10 ³ C

In computer terminology information means:

Processed data

Large data

Raw data

Any data

The 1st practical electric battery is known as:

Pile

Voltaic cell

Voltaic pile

Voltaic

Sound waves having frequency lower than 20 Hz are called:

Infrasonic

Audible

Echo

Ultrasonic

To hear echoes, the minimum distance of the obstacle from source of sound should be:

20m

10m

15m

17m

Which device is used to store charge:

Fuse

Capacitor

Dielectric

Resister

The brain of any computer system is:

Monitor

Memory

Control unit

CPU