PHYSICS Study Mode

Try this quiz in CBT Mode
PHYSICS in CBT Mode

Please share this quiz link to your friends, they might need it!

Quiz link
you can share this link with your friends
copy link veiw live

1.
Myopic defects in the human eye can be corrected through the use of a
Join or view discussions on this question
A.
Concave Mirror
B.
Concave lens
C.
Prism
D.
Convex lens

2.
A charged particle is moving in a uniform magnetic field. if the direction of motion of the charged particle is parallel to the magnetic field, the path of the charge will
Join or view discussions on this question
A.
Be a straight line
B.
Curve inwards
C.
Be a parabola
D.
Curve outwards

3.
What happens to a water pool on a day when the humidity of the air is very low?
Join or view discussions on this question
A.
Temperature decreases
B.
Slow evaporation
C.
Temperature increases
D.
Rapid evaporation

4.
A satellite moves in a circular orbit of radius 4R round the earth. The acceleration of the satellite in terms of g is
Join or view discussions on this question
A.
\(\frac{g}{16}\)
B.
\(\frac{g}{4}\)
C.
\(\frac{4}{g}\)
D.
\(\frac{16}{g}\)
Explanation. Give a better Explanation
\(\frac{g}{R^2}\) = \(\frac{g}{4^2}\) = \(\frac{g}{16}\)


5.
I.Chemical II.Sound III.Electricity

Which of the above forms of energy can directly be converted to light energy?
Join or view discussions on this question
A.
I and II only
B.
II and III only
C.
I, II and III
D.
I and III only

6.
If the distance between the object and the pinhole of a pinhole camera is reduced by half the size of the image of the object
Join or view discussions on this question
A.
Is quadrupled
B.
Is halved
C.
Remains the same
D.
Is double

7.
An object is placed 15cm in front of a plane mirror. If the mirror is moved further 5cm away from the object and the image is
Join or view discussions on this question
A.
80cm
B.
40cm
C.
50cm
D.
70cm

8.
Which of the following statements is correct about a machine?
Join or view discussions on this question
A.
Efficiency of a machine is always greater than I
B.
Efficiency decreases with an increase in friction
C.
Velocity ratio depends on friction
D.
Mechanical advantage increases with an increase in friction

9.
The instrument used to view stars is the
Join or view discussions on this question
A.
Prism binoculars
B.
Telescope
C.
Film projector
D.
Microscope

10.
What is the angular magnification of a telescope having objective and eyepiece lenses of a focal lengths 30cm and 3cm respectively?
Join or view discussions on this question
A.
60
B.
10
C.
30
D.
90
Explanation. Give a better Explanation
M = \(\frac{y}{x}\) = \(\frac{30}{3}\)

= 10


Next Page
Question Map