10th Class Physics MCQS Chapter 5

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10th Class Physics MCQS


The ampere is a unit of:
Electric current
Potential differrence
Energy
Electric potential

The more negative potential of grid, the more electrons will be:
Repelled
Attracted as well as repelled
Attracted
Neither attracted nor repelled

AND operation is represented by:
Division (
Addition (+)
Minus ( )
Dot (.)

The screen of a cathode ray tube consists of a thin layer of:
Sodium
Oxygen
Nitrogen
Phosphorus

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power remains unchanged
halves
four time
doubles

A converging mirror with a radius of 20cm creates a real image 30 cm from the mirror. What is the object distance:
5.0 cm
7.5 cm
15 cm
20 cm

The unit of (?) in formula R=?.L/a is______________.
? m2
? m 2
?
?-m

Which of the following quantities is not change during refraction of light:
Its frequency
Its direction
Its speed
Its wavelength

The distance between principal focus and pole of mirror is called:
Aperture
Focal length
Image
Principal focus

The unit of power is _________
Coulomb
Watt
Joule
Volt

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