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16.
The projection of the particle moving in a circle with non-uniform speed executes ?

S.H.M

Vibratory motion

Both B and D

None S.H.M

17.
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?

A & B

B & C

C & A

A B & C

18.
The ration stress to strain in youngs modulus of the material then tension is__________________?

Directly proportional to extension

Directly proportional to strain

Directly proportional to square of amplitude

Inversely proportional to extension

20.
In a semiconductors the charge carriers are ___________________?

Holes only

Electrons only

Electron and holes both

All of the above

21.
Forward current through a semi conductor diode circuit is due to____________?

minority carriers

majority carriers

holes

electron

25.
The acceleration of a projection on the diameter for a particle moving along a circle is_______________?

w2x

wx2

w2x

wx2

26.
2nd law of motion gives the definition of________________?

force

acceleration

velocity

both force and acceleration

27.
The critical speed of an artificial satellite is_______________?

8 Kms-1

8.1 Kms-1

7.9 Kms-1

8 ms-1

28.
As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?

shifts towards longer wavelength

shifts towards shorter wavelength

remain the same

shifts towards longer as well as shorter wavelengths

29.
When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

zero

minimum

infinity

maximum

30.
Inertia of an object is quantitative measure of its__________________?

volume

density

mass

temperature

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