1000+ Physics Quiz Questions with Answers - 1

Question: 1

In black and white televisions, pictures on the screen are produced due to bombardment of

(A) Electrons on a white screen

(B) Electrons on a fluorescent white screen

(C) X-ray photons on a white fluorescent screen

(D) X-ray photons on a white screen

Question: 2

A diode can be used for

(A) Amplification

(B) Rectification

(C) Modulation

(D) Detection

Question: 3

Long distance short-wave radio broad casting uses

(A) Ground wave

(B) Sky wave

(C) Ionospheric wave

(D) Direct wave

Question: 4

If a high power heater is connected to electric mains, then the bulbs in the house become dim because there is a

(A) Current drop

(B) Potential drop

(C) No current drop

(D) No potential drop

Question: 5

By increasing the number of turns in the coil, the strength of the magnetic field

(A) First increases then decreases

(B) Remains unchanged

(C) Increases

(D) Decreases