MPSC Rajyaseva Physics Questions with Answers & Explanations

Which mirror is used as a rear-view mirror in vehicles?

1. ACylindrical mirror
2. BPlane mirror
3. CConvex mirror
4. DConcave mirror

Absolute zero temperature is

1. A0 °C
2. B−100 °C
3. C−273.15 °C
4. D−459 °C

The SI unit of pressure is the

1. APascal
2. BJoule
3. CNewton
4. DBar

The SI unit of work and energy is the

1. APascal
2. BNewton
3. CWatt
4. DJoule

The SI unit of frequency is the

1. ATesla
2. BWatt
3. CHertz
4. DDecibel

The SI unit of electric current is the

1. AAmpere
2. BCoulomb
3. CVolt
4. DOhm

The sky appears blue because of

1. ADispersion of light
2. BScattering of light
3. CReflection of light
4. DRefraction of light

The instrument used to measure atmospheric pressure is the

1. AAmmeter
2. BBarometer
3. CHygrometer
4. DThermometer

The unit of momentum is

1. Akg·m/s²
2. BJ/s
3. CN/m
4. Dkg·m/s

Which device converts mechanical energy into electrical energy?

1. AMotor
2. BBattery
3. CTransformer
4. DGenerator

Absolute zero temperature is

1. A0 °C
2. B−100 °C
3. C−459 °C
4. D−273.15 °C

Newton's first law of motion is also called the law of

1. AAcceleration
2. BInertia
3. CGravitation
4. DMomentum

The SI unit of electric current is the

1. AVolt
2. BCoulomb
3. COhm
4. DAmpere

An electric motor converts

1. AMechanical energy into electrical energy
2. BLight into electricity
3. CElectrical energy into mechanical energy
4. DHeat into electricity

A rainbow is formed due to

1. AScattering only
2. BDispersion and total internal reflection of light
3. COnly reflection
4. DPolarisation

Sound cannot travel through

1. AVacuum
2. BWater
3. CSteel
4. DAir

The SI unit of electrical resistance is the

1. AVolt
2. BFarad
3. CAmpere
4. DOhm

The SI unit of power is the

1. AAmpere
2. BWatt
3. CJoule
4. DVolt

Which is a good conductor of electricity?

1. AGlass
2. BCopper
3. CRubber
4. DWood

Which colour of light has the longest wavelength?

1. ABlue
2. BViolet
3. CGreen
4. DRed