10th Class Physics MCQS Chapter 7

AND gate can be formed by using two:

OR gates

NOT gates

NOR gates

Nand gates

The process by which electrons are emitted by a hot metal surface is known as:

Conduction

Thermionic emission

Boiling

Evaportion

Power of hair dryer is:

1000 W

750 W

10 W

75 W

SI unit of capacitance is:

Watt

Farad

Volt

Joule

To protect the gold leaves of electroscope from the external electric disturbances, the aluminum foil is grounded by a thin wire, which is made up of:

Brass

Copper

Silver

Aluminum

1 Pico farad is equal to:

10¹²F

10^-12F

10 ⁶F

10 ⁹F

Capacitors are used to store:

Charge

Voltage

Resistance

Current

The converter of digital to analogue signal is:

DTC

DAC

ADC

DATC

If one of the resistors in a parallel circuit is removed, the total resistance will be:

Doubled

Remain same

Decreased

Increased

Two switches attached in series work on which operation?

OR operation

NOT operation

NOR operation

AND operation