# Physics MCQs

Physics Mcqs for Test Preparation from Basic to Advance. Physics Mcqs are from the different sections of Physics. Here you will find Mcqs of Physics and quantum physics subject from Basic to Advance. Which will help you to get higher marks in Physics subject. These Mcqs are useful for students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, PTS, OTS, GTS, JTS, CTS, NTS        .

Electromagnetic waves transport___________________?

A. Energy
B. Momentum
C. Mass
D. Heat

Electromagnetic waves emitted from antenna are________________?

A. Stationary
B. Longitudinal
C. Transverse
D. All the above

A capacitor of capacitance 30µF is charged by a constant current of 10mA. If initially, the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V ?

A. 0.9sec
B. 15 sec
C. 1.5x105sec
D. 0.9x102sec

To find the r.m.s value of an alternating current mathematically we need to have ________________?

A. Mean value of I2
B. Square root of mean value of I2
C. Square root of I2
D. Square of 1/2

An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?

A. I = 2I∫Sin(πt/2)
B. I = 2I∫Sin(2πt)
C. I = 2ISinπt
D. I = I∫sin(2πt)

pure resistor circuit the voltage and current are_______________?

A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference

When A.C current passes through a capacitor then the current relationship will be_______________?

A. The current lead voltage by phase angle is 90 degrees
B. The voltage leads current by phase angle is 90 degrees
C. The current lead voltage by phase angle is 45 degrees
D. The voltage leads current by phase angle is 45 degrees

In the capacitive circuit the current___________________?

A. Lags behind voltage by π/2
B. Is in phase with voltage
C. Opposite in phase of voltage by π
D. Leads forward the voltage by π/2

A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________?

A. 32Ω
B. 62Ω
C. 50Ω
D. 100Ω

If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?

A. Remains same
B. Brightness increases
C. Brightness decreases
D. No light