Category: 1. Common Subject

A plane mirror is rotated by 10°; the reflected ray turns by A 20 degrees B 10 degrees C 5

A ray makes 50° with the mirror surface; angle of incidence is A 40 degrees B 50 degrees C 90

A ray hits a mirror at 30° to the normal; reflected angle is A 60 degrees B 30 degrees C

Which statement matches the first law of reflection A Light bends in glass B Speed increases in water C Angle

Two blocks A and B (same mass) get equal heat. A’s temperature rises 10°C, B’s rises 20°C. Compared to A,

Two equal metal blocks get equal heat; the one with higher specific heat will show A Higher temperature rise B

A cold metal chair feels colder than a wooden chair in the same room mainly because metal A Has higher

A metal cup and plastic cup feel different at same room temperature mainly due to A Different heat flow B

When a hot spoon is kept in cold water, what usually moves from spoon to water? A Coldness moves B

In a simple atom model, which part stays at the center and holds most of the atom’s mass A Valence