PG TRB Physics Model Question Paper with Answer - 1

Question: 1

When light waves pass from air to glass, the variables affected are

(A) Wavelength and velocity

(B) Wavelength and frequency

(C) Velocity and frequency

(D) Wavelength, frequency and velocity

Question: 2

Who was the inventor of electron microscope?

(A) Max Knoll & Ernst Ruska

(B) Leewan Hock

(C) Robert Koach

(D) P. Swansun

Question: 3

The region covered by water is known as

(A) Hydrosphere

(B) Ionosphere

(C) Atmosphere

(D) Lathosphere

Question: 4

The position of the image in a camera is

(A) At F

(B) At 2F

(C) In between F and 2F

(D) Beyond 2F

Question: 5

A switch is always connected to the

(A) Neutral wire

(B) Line wire

(C) Earth wire

(D) None of these