Physics Mcqs

In case of a simple pendulum, the cause of damping is__________________?

(A) Drag force of air
(B) Gravity
(C) Tension in the string
(D) None of these

Submitted By :Ali Uppal

A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?

(A) None
(B) 1
(C) 2
(D) 3

Submitted By :Ali Uppal

The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?

(A) 10 cm
(B) 5 cm
(C) 15 cm
(D) 7.5 cm

Submitted By :Ali Uppal

For a simple pendulu,m the restoring force is caused by________________?

(A) Gravity
(B) Spring
(C) Hand
(D) All of these

Submitted By :Ali Uppal

Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?

(A) Mean position
(B) Elsewhere
(C) Extreme position
(D) None

Submitted By :Ali Uppal

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

(A) S.H.M
(B) Vibratory motion
(C) Both B and D
(D) None S.H.M

Submitted By :Ali Uppal

The velocity of the mass attached to a spring is maximum at_______________?

(A) Mean position
(B) Extreme position
(C) Both A and B
(D) None

Submitted By :Ali Uppal

At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?

(A) Increase
(B) Decrease
(C) Remains the same
(D) Is zero

Submitted By :Ali Uppal

If a material object moves with speed of light its mass becomes ________________?

(A) equal to its rest mass
(B) double of its rest mass
(C) infinite
(D) zero

Submitted By :Ali Uppal

Select an alternative from of uncertainly principle from the following_______________?

(A) ∆E = h/m∆c(1-cosθ)
(B) ∆E . ∆t = h
(C) mc2 = hv
(D) Any of above

Submitted By :Ali Uppal

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