When light enters from vacuum in to glass, it's velocity
A) decreases
B) remains same
C) increases
D) varies depending on mass of glass
Correct Answer:
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Q11: Maximum current a battery of e.m.f 3.0
Q12: In potential dividers, the output voltage depends
Q13: Calipers are used to measure the
A)diameter
B)length
C)thickness
D)volume
Q14: Smallest division on stopwatch is
A)0.1 s
B)0.05 s
C)0.01
Q15: intensity of sun's radiation is about {{}}
A)1.0
Q17: As wave travels, intensity
A)increases
B)remains same
C)decreases
D)varies
Q18: Waves that move through materials are called
A)progressive
Q19: Speed of sound in air is {{}}
A)280
Q20: Particles vibrate about their mean positions and
Q21: Speed of electromagnetic radiation is independent of
A)wavelength
B)amplitude
C)time
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