intensity of sun's radiation is about {{}}
A) 1.0 kW m-2
B) 20 kW m-2
C) 5 kW m-2
D) 8 kW m-2
Correct Answer:
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Q10: While taking the reading, the line of
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
Q16: When light enters from vacuum in to
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
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