MHT CET Physics 2025 Most Expected Questions

1.

Two identical wires of substances 'P' and 'Q' are subjected to equal stretching force along the length. If the elongation of 'Q' is more than that of 'P', then

(A) Both P and Q are equally elastic

(B) P is more elastic than Q

(C)P is plastic and Q is elastic

(D)Q is more elastic than P

2.

In the study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98 then the ratio of collector current to base current will be

(A) 99

(B) 49

(C) 50

(D) 98

3.

Two parallel conductors carrying unequal currents in the same direction __________

(A) Neither attract nor repel each other

(B) Repel each other

(C) Attract each other

(D) Will have rotational motion

4.

The surface area of a spherical balloon is increasing at the rate 2 cm² / sec. Then rate of increase in the volume of the balloon is, when the radius of the balloon is 6 cm.

A 4 cm³ / sec

B 16 cm³ / sec

C 36 cm³ / sec

D 6 cm³ / sec

5.

A wire of length 20 units is divided into wo parts such that the product of one part and cube of the other part is maximum, then product of these parts is

A 5

B 75

C 15

D 70

6.

For a metallic wire, the ratio of voltage to corresponding current is

(A) Independent of temperature.

(B) Increases with rise in temperature.

(C) Increases or decreases with rise in temperature depending upon the metal. (D) Decreases with rise in temperature.

7.

Two pendulums begin to swing simultaneously. The first pendulum makes nine full oscillations when the other makes seven. The ratio of the lengths of the two pendulums is

(A) 49/81

(B) 64/81

(C) 8/9

(D) 7/9

8.

The angle between the lines, whose direction cosines l, m, n satisfy the equations l + m + n = 0 and 2 l2 + 2m² -n² = 0, is A 60° B 180° C 90° D 30°

9.

If radius of the solid sphere is doubled by keeping its mass constant, the ratio of their moment of inertia about any of its diameter is

(A) 1:8

(B) 2:5

(C) 2:3

(D) 1:4

10.

The radius of the earth and the radius of orbit around the sun are 6371 km and 149×106 km respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

(A) 10 ³

(B) 10 ²

(C) 10 ⁴

(D) 10 ⁵

11.

In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to

(A) Increase space for rotation of the coil.

(B) Reduce weight of galvanometer

(C) Produce a magnetic field which is parallel to the plane of the coil at any position.

12.

A galvanometer has resistance of 100Ω and a current of 10mA produces full scale deflection in it. The resistance to be connected to it in series, to get a voltmeter of range 50 volt is

(A) 3900Ω

(B) 4000Ω

(C) 4600Ω

(D) 4900Ω

13.

When the electron in hydrogen atom jumps from fourth Bohr orbit to second Bohr orbit, one gets the

(A) Second line of Balmer series.

(B) First line of Balmer series.

(C) First line of Pfund series.

(D) Second line of Paschen series

14.

A committee of 11 members is to be formed out of 8 males and 5 females. If m is the number of ways the committee is formed with at least 6 males and n is the number of ways with at least 3 females, then

A. n = m - 8

B. m = n = 78

C. m = n = 68

D. m + n = 68

15.

One of the principal solutions of √3secx = -2 is equal to:

A. π/4

B. 2π/3

C. π/6

D. 5π/6